Uncoated Steel Hex Nuts | McMaster-Carr

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640 Products

About Hex Nuts

Choose a hex nut with the right profile, material, and strength for your application.

Hex Nut Profile

Standard

The most common hex nuts for fastening machinery and equipment

277 products

Thin

Fit in spaces with low clearance

185 products

Hex Nut Profile

Heavy

Wider and taller than standard nuts to handle heavier loads

133 products

High

Larger gripping area keeps wrenches from slipping off as you tighten

15 products

Hex Nuts

The most commonly used hex nuts, these are suitable for fastening most machinery and equipment.

Medium-Strength Steel

Image of Product. Front orientation. Hex Nuts. Hex Nuts.

These Grade 5 or Class 8 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Thread Size	Wd.	Ht.	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Steel



		1/4"-20	7/16"	7/32"	SAE Grade 5	ASME B18.2.2	100	95505A601	00000
		1/4"-28	7/16"	7/32"	SAE Grade 5	ASME B18.2.2	100	95505A611	0000
		5/16"-18	1/2"	17/64"	SAE Grade 5	ASME B18.2.2	100	95505A602	0000
		5/16"-24	1/2"	17/64"	SAE Grade 5	ASME B18.2.2	100	95505A612	0000
		3/8"-16	9/16"	21/64"	SAE Grade 5	ASME B18.2.2	100	95505A603	00000
		3/8"-24	9/16"	21/64"	SAE Grade 5	ASME B18.2.2	100	95505A613	0000
		7/16"-14	11/16"	3/8"	SAE Grade 5	ASME B18.2.2	100	95505A604	00000
		7/16"-20	11/16"	3/8"	SAE Grade 5	ASME B18.2.2	100	95505A614	00000
		1/2"-13	3/4"	7/16"	SAE Grade 5	ASME B18.2.2	50	95505A605	00000
		1/2"-20	3/4"	7/16"	SAE Grade 5	ASME B18.2.2	50	95505A615	00000


		9/16"-12	7/8"	31/64"	SAE Grade 5	ASME B18.2.2	25	95505A606	00000
		9/16"-18	7/8"	31/64"	SAE Grade 5	ASME B18.2.2	25	95505A616	0000
		5/8"-11	15/16"	35/64"	SAE Grade 5	ASME B18.2.2	25	95505A607	00000
		5/8"-18	15/16"	35/64"	SAE Grade 5	ASME B18.2.2	25	95505A617	00000
		3/4"-10	1 1/8"	41/64"	SAE Grade 5	ASME B18.2.2	25	95505A608	00000
		3/4"-16	1 1/8"	41/64"	SAE Grade 5	ASME B18.2.2	25	95505A618	00000
		7/8"-9	1 5/16"	3/4"	SAE Grade 5	ASME B18.2.2	10	95505A609	00000
		7/8"-14	1 5/16"	3/4"	SAE Grade 5	ASME B18.2.2	10	95505A619	00000
		1"-8	1 1/2"	55/64"	SAE Grade 5	ASME B18.2.2	5	95505A610	0000
		1"-12	1 1/2"	55/64"	SAE Grade 5	ASME B18.2.2	1	95505A620	0000


		1"-14	1 1/2"	55/64"	SAE Grade 5	ASME B18.2.2	5	95505A621	0000
		1 1/8"-7	1 11/16"	31/32"	SAE Grade 5	ASME B18.2.2	5	95505A622	00000
		1 1/8"-12	1 11/16"	31/32"	SAE Grade 5	ASME B18.2.2	5	95505A626	00000
		1 1/4"-7	1 7/8"	1 1/16"	SAE Grade 5	ASME B18.2.2	5	95505A623	0000
		1 1/4"-12	1 7/8"	1 1/16"	SAE Grade 5	ASME B18.2.2	5	95505A627	00000
		1 3/8"-6	2 1/16"	1 11/64"	SAE Grade 5	ASME B18.2.2	1	95505A624	0000
		1 3/8"-12	2 1/16"	1 11/64"	SAE Grade 5	ASME B18.2.2	1	95505A628	0000
		1 1/2"-6	2 1/4"	1 9/32"	SAE Grade 5	ASME B18.2.2	1	95505A625	0000
		1 1/2"-12	2 1/4"	1 9/32"	SAE Grade 5	ASME B18.2.2	1	95505A629	0000
		1 3/4"-5	2 5/8"	1 1/2"	SAE Grade 5	ASME B18.2.2	1	95505A642	00000


		1 3/4"-12	2 5/8"	1 1/2"	SAE Grade 5	ASME B18.2.2	1	95505A630	00000
		2"-4 1/2	3"	1 23/32"	SAE Grade 5	ASME B18.2.2	1	95505A661	00000
		2"-12	3"	1 23/32"	SAE Grade 5	ASME B18.2.2	1	95505A631	00000
		M2 × 0.4 mm	4 mm	1.6 mm	ISO Class 8	DIN 934	100	90592A075	0000
		M2.5 × 0.45 mm	5 mm	2 mm	ISO Class 8	DIN 934	100	90592A080	0000
		M3 × 0.5 mm	5.5 mm	2.4 mm	ISO Class 8	DIN 934	100	90592A085	0000
		M3.5 × 0.6 mm	6 mm	2.8 mm	ISO Class 8	DIN 934	100	90592A104	00000
		M4 × 0.7 mm	7 mm	3.2 mm	ISO Class 8	DIN 934	100	90592A090	0000
		M5 × 0.8 mm	8 mm	4 mm	ISO Class 8	DIN 934	100	90592A095	0000
		M6 × 0.75 mm	10 mm	5 mm	ISO Class 8	DIN 934	100	91423A110	00000


		M6 × 1 mm	10 mm	5 mm	ISO Class 8	DIN 934	100	90592A016	0000
		M7 × 1 mm	11 mm	5.5 mm	ISO Class 8	DIN 934	100	90592A018	0000
		M8 × 1 mm	13 mm	6.5 mm	ISO Class 8	DIN 934	100	91423A120	00000
		M8 × 1.25 mm	13 mm	6.5 mm	ISO Class 8	DIN 934	100	90592A022	0000
		M10 × 1 mm	17 mm	8 mm	ISO Class 8	DIN 934	50	91423A140	00000
		M10 × 1.25 mm	17 mm	8 mm	ISO Class 8	DIN 934	50	91423A130	00000
		M10 × 1.5 mm	17 mm	8 mm	ISO Class 8	DIN 934	100	90592A024	00000
		M12 × 1 mm	19 mm	10 mm	ISO Class 8	DIN 934	10	91423A170	00000
		M12 × 1.25 mm	19 mm	10 mm	ISO Class 8	DIN 934	25	91423A160	00000
		M12 × 1.5 mm	19 mm	10 mm	ISO Class 8	DIN 934	25	91423A150	00000


		M12 × 1.75 mm	19 mm	10 mm	ISO Class 8	DIN 934	100	90592A028	00000
M14 × 1.25 mm		22 mm	11 mm	ISO Class 8	DIN 934	5	91423A190	00000
M14 × 1.5 mm	22 mm	11 mm	ISO Class 8	DIN 934	25	91423A180	00000
M14 × 2 mm	22 mm	11 mm	ISO Class 8	DIN 934	25	90592A032	00000
M16 × 1.5 mm	24 mm	13 mm	ISO Class 8	DIN 934	20	91423A210	00000
M16 × 2 mm	24 mm	13 mm	ISO Class 8	DIN 934	25	90592A034	00000
M18 × 1.5 mm	27 mm	15 mm	ISO Class 8	DIN 934	10	91423A220	00000
M18 × 2.5 mm	27 mm	15 mm	ISO Class 8	DIN 934	25	90592A045	00000
M20 × 1.5 mm	30 mm	16 mm	ISO Class 8	DIN 934	5	91423A240	0000
M20 × 2 mm	30 mm	16 mm	ISO Class 8	DIN 934	1	91423A230	0000
M20 × 2.5 mm	30 mm	16 mm	ISO Class 8	DIN 934	10	90592A050	00000
M22 × 1.5 mm	32 mm	18 mm	ISO Class 8	DIN 934	1	91423A260	0000
M22 × 2 mm	32 mm	18 mm	ISO Class 8	DIN 934	1	91423A250	0000
M22 × 2.5 mm	32 mm	18 mm	ISO Class 8	DIN 934	10	90592A109	00000
M24 × 1.5 mm	36 mm	19 mm	ISO Class 8	DIN 934	1	91423A280	0000
M24 × 2 mm	36 mm	19 mm	ISO Class 8	DIN 934	5	91423A270	00000
M24 × 3 mm	36 mm	19 mm	ISO Class 8	DIN 934	10	90592A055	00000
M27 × 1.5 mm	41 mm	22 mm	ISO Class 8	DIN 934	1	91423A310	00000
M27 × 2 mm	41 mm	22 mm	ISO Class 8	DIN 934	1	91423A290	0000
M27 × 3 mm	41 mm	22 mm	ISO Class 8	DIN 934	1	90592A313	0000
M30 × 2 mm	46 mm	24 mm	ISO Class 8	DIN 934	1	91423A320	0000
M30 × 3.5 mm	46 mm	24 mm	ISO Class 8	DIN 934	5	90592A065	00000
M33 × 2 mm	50 mm	26 mm	ISO Class 8	DIN 934	1	91423A340	00000
M33 × 3 mm	50 mm	26 mm	ISO Class 8	DIN 934	1	91423A330	0000
M33 × 3.5 mm	50 mm	26 mm	ISO Class 8	DIN 934	1	90592A341	0000
M36 × 3 mm	55 mm	29 mm	ISO Class 8	DIN 934	1	91423A350	0000
M36 × 4 mm	55 mm	29 mm	ISO Class 8	DIN 934	1	90592A070	00000
M39 × 2 mm	60 mm	31 mm	ISO Class 8	DIN 934	1	91423A460	00000
M39 × 3 mm	60 mm	31 mm	ISO Class 8	DIN 934	1	91423A360	00000
M39 × 4 mm	60 mm	31 mm	ISO Class 8	DIN 934	1	90592A385	00000
M42 × 3 mm	65 mm	34 mm	ISO Class 8	DIN 934	1	91423A370	00000
M42 × 4.5 mm	65 mm	34 mm	ISO Class 8	DIN 934	1	90592A472	00000
M45 × 3 mm	70 mm	36 mm	ISO Class 8	DIN 934	1	91423A380	00000
M45 × 4.5 mm	70 mm	36 mm	ISO Class 8	DIN 934	1	90592A495	00000
M48 × 3 mm	75 mm	38 mm	ISO Class 8	DIN 934	1	91423A390	00000
M48 × 5 mm	75 mm	38 mm	ISO Class 8	DIN 934	1	90592A872	00000
M52 × 3 mm	80 mm	42 mm	ISO Class 8	DIN 934	1	91423A410	00000
M56 × 3 mm	85 mm	45 mm	ISO Class 8	DIN 934	1	91423A430	00000
M56 × 4 mm	85 mm	45 mm	ISO Class 8	DIN 934	1	91423A420	00000
M60 × 4 mm	90 mm	48 mm	ISO Class 8	DIN 934	1	91423A440	00000
M72 × 4 mm	105 mm	58 mm	ISO Class 8	DIN 934	1	91423A450	000000

High-Strength Steel

Rated Grade 8, Grade C, or Class 10, these nuts are about 25% stronger than medium-strength steel nuts. They are commonly used to fasten components in valves, pumps, motors, and other high-stress applications. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Thread Size	Wd.	Ht.	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Steel



		1/4"-20	7/16"	7/32"	SAE Grade 8	—	100	90499A029	00000
		1/4"-28	7/16"	7/32"	SAE Grade 8	—	100	90499A805	0000
		5/16"-18	1/2"	17/64"	SAE Grade 8	—	100	90499A030	0000
		5/16"-24	1/2"	17/64"	SAE Grade 8	—	100	90499A810	0000
		3/8"-16	9/16"	21/64"	SAE Grade 8	—	100	90499A031	00000
		3/8"-24	9/16"	21/64"	SAE Grade 8	—	100	90499A815	00000
		7/16"-14	11/16"	3/8"	SAE Grade 8	—	100	90499A032	00000
		7/16"-20	11/16"	3/8"	SAE Grade 8	—	100	90499A820	00000
		1/2"-13	3/4"	7/16"	SAE Grade 8	—	50	90499A033	00000
		1/2"-20	3/4"	7/16"	SAE Grade 8	—	50	90499A825	00000


		9/16"-12	7/8"	31/64"	SAE Grade 8	—	50	90499A827	00000
		9/16"-18	7/8"	31/64"	SAE Grade 8	—	50	90499A830	00000
		5/8"-11	15/16"	35/64"	SAE Grade 8	—	50	90499A832	00000
		5/8"-18	15/16"	35/64"	SAE Grade 8	—	25	90499A835	00000
		3/4"-10	1 1/8"	41/64"	SAE Grade 8	—	25	90499A837	00000
		3/4"-16	1 1/8"	41/64"	SAE Grade 8	—	10	90499A840	0000
		7/8"-9	1 5/16"	3/4"	SAE Grade 8	—	10	90499A842	00000
		7/8"-14	1 5/16"	3/4"	SAE Grade 8	—	10	90499A845	00000
		1"-12	1 1/2"	55/64"	SAE Grade 8	—	1	90499A850	0000
		1"-14	1 1/2"	55/64"	SAE Grade 8	—	10	90499A855	00000


		1 1/8"-7	1 11/16"	31/32"	SAE Grade 8	—	5	90499A857	00000
		1 1/8"-12	1 11/16"	31/32"	SAE Grade 8	—	5	90499A858	00000
		1 1/4"-7	1 7/8"	1 1/16"	SAE Grade 8	—	5	90499A859	00000
		1 1/4"-12	1 7/8"	1 1/16"	SAE Grade 8	—	5	90499A860	00000
		1 3/8"-6	2 1/16"	1 11/64"	SAE Grade 8	—	1	90499A042	0000
		1 3/8"-12	2 1/16"	1 11/64"	SAE Grade 8	—	1	90499A863	0000
		1 1/2"-6	2 1/4"	1 9/32"	SAE Grade 8	—	1	90499A041	0000
		1 1/2"-12	2 1/4"	1 9/32"	SAE Grade 8	—	1	90499A865	0000
		1 3/4"-5	2 5/8"	1 1/2"	SAE Grade 8	—	1	90499A044	00000
		1 3/4"-12	2 5/8"	1 1/2"	SAE Grade 8	—	1	90499A868	00000


		2"-4 1/2	3"	1 23/32"	SAE Grade 8	—	1	90499A045	00000
		2"-12	3"	1 23/32"	SAE Grade 8	—	1	90499A870	00000
		M3 × 0.5 mm	5.5 mm	2.4 mm	ISO Class 10	DIN 934	25	90685A037	00000
		M4 × 0.7 mm	7 mm	3.2 mm	ISO Class 10	DIN 934	100	90685A039	0000
		M5 × 0.8 mm	8 mm	4 mm	ISO Class 10	DIN 934	100	90685A041	0000
		M6 × 1 mm	10 mm	5 mm	ISO Class 10	DIN 934	100	90685A043	00000
		M8 × 1 mm	13 mm	6.5 mm	ISO Class 10	DIN 934	50	4379N111	00000
		M8 × 1.25 mm	13 mm	6.5 mm	ISO Class 10	DIN 934	100	90685A045	00000
		M10 × 1 mm	17 mm	8 mm	ISO Class 10	DIN 934	10	4379N112	0000
		M10 × 1.25 mm	17 mm	8 mm	ISO Class 10	DIN 934	10	4379N113	0000


		M10 × 1.5 mm	17 mm	8 mm	ISO Class 10	DIN 934	50	90685A046	00000
		M12 × 1 mm	19 mm	10 mm	ISO Class 10	DIN 934	10	4379N114	00000
		M12 × 1.25 mm	19 mm	10 mm	ISO Class 10	DIN 934	25	4379N115	00000
		M12 × 1.5 mm	19 mm	10 mm	ISO Class 10	DIN 934	10	4379N116	0000
		M12 × 1.75 mm	19 mm	10 mm	ISO Class 10	DIN 934	25	90685A110	00000
		M14 × 1.5 mm	22 mm	11 mm	ISO Class 10	DIN 934	10	4379N117	0000
		M14 × 2 mm	22 mm	11 mm	ISO Class 10	DIN 934	25	90685A115	00000
		M16 × 1.5 mm	24 mm	13 mm	ISO Class 10	DIN 934	10	4379N118	00000
		M16 × 2 mm	24 mm	13 mm	ISO Class 10	DIN 934	10	90685A120	00000
		M18 × 1.5 mm	27 mm	15 mm	ISO Class 10	DIN 934	5	4379N119	0000


		M18 × 2.5 mm	27 mm	15 mm	ISO Class 10	DIN 934	10	90685A125	00000
M20 × 1.5 mm		30 mm	16 mm	ISO Class 10	DIN 934	5	4379N12	0000
M20 × 2 mm	30 mm	16 mm	ISO Class 10	DIN 934	5	4379N121	00000
M20 × 2.5 mm	30 mm	16 mm	ISO Class 10	DIN 934	10	90685A130	00000
M22 × 1.5 mm	32 mm	18 mm	ISO Class 10	DIN 934	1	4379N122	0000
M22 × 2.5 mm	32 mm	18 mm	ISO Class 10	DIN 934	5	90685A101	00000
M24 × 1.5 mm	36 mm	19 mm	ISO Class 10	DIN 934	1	4379N123	0000
M24 × 2 mm	36 mm	19 mm	ISO Class 10	DIN 934	1	4379N124	0000
M24 × 3 mm	36 mm	19 mm	ISO Class 10	DIN 934	5	90685A060	00000
M27 × 2 mm	41 mm	22 mm	ISO Class 10	DIN 934	1	4379N125	0000
M27 × 3 mm	41 mm	22 mm	ISO Class 10	DIN 934	5	90685A102	00000
M30 × 1.5 mm	46 mm	24 mm	ISO Class 10	DIN 934	1	4379N126	00000
M30 × 2 mm	49 mm	24 mm	ISO Class 10	DIN 934	1	4379N127	00000
M30 × 3.5 mm	46 mm	24 mm	ISO Class 10	DIN 934	1	90685A070	0000
M36 × 2 mm	55 mm	29 mm	ISO Class 10	DIN 934	1	4379N128	00000
M36 × 4 mm	55 mm	29 mm	ISO Class 10	DIN 934	1	90685A080	00000
M42 × 4.5 mm	65 mm	34 mm	ISO Class 10	DIN 934	1	90685A103	00000
M48 × 5 mm	75 mm	38 mm	ISO Class 10	DIN 934	1	90685A104	00000

High-Strength Steel with Material Certificate

Nuts include a report with a traceable lot number and a description of their chemical and physical properties. Rated Grade 8, Grade C, or Class 10, these nuts are about 25% stronger than medium-strength steel nuts. They are commonly used to fasten components in valves, pumps, motors, and other high-stress applications. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Steel—Best for dry environments since moisture will cause these nuts to rust.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Wd.	Ht.	Fastener Strength Grade/Class	Pkg. Qty.		Pkg.
Steel



	1"-8	1 1/2"	55/64"	SAE Grade 8	10	90499A847	000000

Extreme-Strength Steel

These nuts are about 20% stronger than high-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd., mm	Ht., mm	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Steel



	M6 × 1 mm	10	5	ISO Class 12	DIN 934	50	94223A101	000000
	M8 × 1.25 mm	13	6.5	ISO Class 12	DIN 934	25	94223A102	00000
	M10 × 1.5 mm	17	8	ISO Class 12	DIN 934	10	94223A103	0000
	M12 × 1.75 mm	19	10	ISO Class 12	DIN 934	10	94223A104	00000
	M14 × 2 mm	22	11	ISO Class 12	DIN 934	1	94223A109	0000
	M16 × 2 mm	24	13	ISO Class 12	DIN 934	5	94223A105	00000
	M18 × 2.5 mm	27	15	ISO Class 12	DIN 934	1	94223A110	0000
	M20 × 2.5 mm	30	16	ISO Class 12	DIN 934	5	94223A106	00000
	M24 × 3 mm	36	19	ISO Class 12	DIN 934	1	94223A107	0000
	M27 × 3 mm	41	22	ISO Class 12	DIN 934	1	94223A111	00000


	M30 × 3.5 mm	46	24	ISO Class 12	DIN 934	1	94223A108	00000
	M33 × 3.5 mm	50	26	ISO Class 12	DIN 934	1	94223A112	00000
	M36 × 4 mm	55	29	ISO Class 12	DIN 934	1	94223A113	00000
	M39 × 4 mm	60	31	ISO Class 12	DIN 934	1	94223A114	00000
	M42 × 4.5 mm	65	34	ISO Class 12	DIN 934	1	94223A115	00000
	M45 × 4.5 mm	70	36	ISO Class 12	DIN 934	1	94223A116	00000
	M48 × 5 mm	75	38	ISO Class 12	DIN 934	1	94223A117	00000

Low-Strength Steel

Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Thread Size	Wd.	Ht.	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Steel



		1/4"-20	7/16"	7/32"	SAE Grade 2	ASME B18.2.2	100	90490A029	00000
		1/4"-28	7/16"	7/32"	SAE Grade 2	ASME B18.2.2	100	90490A205	0000
		5/16"-18	1/2"	17/64"	SAE Grade 2	ASME B18.2.2	100	90490A030	0000
		5/16"-24	1/2"	17/64"	SAE Grade 2	ASME B18.2.2	100	90490A210	0000
		3/8"-16	9/16"	21/64"	SAE Grade 2	ASME B18.2.2	100	90490A031	00000
		3/8"-24	9/16"	21/64"	SAE Grade 2	ASME B18.2.2	100	90490A215	00000
		7/16"-14	11/16"	3/8"	SAE Grade 2	ASME B18.2.2	100	90490A032	00000
		7/16"-20	11/16"	3/8"	SAE Grade 2	ASME B18.2.2	100	90490A220	00000
		1/2"-13	3/4"	7/16"	SAE Grade 2	ASME B18.2.2	100	90490A033	00000
		1/2"-20	3/4"	7/16"	SAE Grade 2	ASME B18.2.2	100	90490A225	00000


		9/16"-12	7/8"	31/64"	SAE Grade 2	ASME B18.2.2	50	90490A034	00000
		9/16"-18	7/8"	31/64"	SAE Grade 2	ASME B18.2.2	50	90490A230	00000
		5/8"-11	15/16"	35/64"	SAE Grade 2	ASME B18.2.2	50	90490A035	00000
		5/8"-18	15/16"	35/64"	SAE Grade 2	ASME B18.2.2	50	90490A235	00000
		3/4"-10	1 1/8"	41/64"	SAE Grade 2	ASME B18.2.2	25	90490A436	00000
		3/4"-16	1 1/8"	41/64"	SAE Grade 2	ASME B18.2.2	25	90490A240	00000
		7/8"-9	1 5/16"	3/4"	SAE Grade 2	ASME B18.2.2	25	90490A037	00000
		7/8"-14	1 5/16"	3/4"	SAE Grade 2	ASME B18.2.2	10	90490A245	00000
		1"-8	1 1/2"	55/64"	SAE Grade 2	ASME B18.2.2	10	90490A438	00000
		1"-12	1 1/2"	55/64"	SAE Grade 2	ASME B18.2.2	10	90490A250	00000


		1"-14	1 1/2"	55/64"	SAE Grade 2	ASME B18.2.2	10	90490A255	00000
		1 1/8"-7	1 11/16"	31/32"	SAE Grade 2	ASME B18.2.2	10	90490A439	00000
		1 1/8"-12	1 11/16"	31/32"	SAE Grade 2	ASME B18.2.2	10	90490A258	00000
		1 1/4"-7	1 7/8"	1 1/16"	SAE Grade 2	ASME B18.2.2	5	90490A440	00000
		1 1/4"-12	1 7/8"	1 1/16"	SAE Grade 2	ASME B18.2.2	5	90490A260	00000
		1 3/8"-6	2 1/16"	1 11/64"	SAE Grade 2	ASME B18.2.2	1	90490A442	0000
		1 3/8"-12	2 1/16"	1 11/64"	SAE Grade 2	ASME B18.2.2	1	90490A263	0000
		1 1/2"-6	2 1/4"	1 9/32"	SAE Grade 2	ASME B18.2.2	1	90490A441	0000
		1 1/2"-12	2 1/4"	1 9/32"	SAE Grade 2	ASME B18.2.2	1	90490A265	0000
		1 5/8"-5 1/2	2 7/16"	1 25/64"	SAE Grade 2	ASME B18.2.2	1	90490A061	0000


		1 5/8"-12	2 7/16"	1 25/64"	SAE Grade 2	ASME B18.2.2	1	90490A266	0000
		1 3/4"-5	2 5/8"	1 1/2"	SAE Grade 2	ASME B18.2.2	1	90490A044	00000
		1 3/4"-12	2 5/8"	1 1/2"	SAE Grade 2	ASME B18.2.2	1	90490A268	0000
		1 7/8"-5	2 13/16"	1 39/64"	SAE Grade 2	ASME B18.2.2	1	90490A065	00000
		1 7/8"-12	2 13/16"	1 39/64"	SAE Grade 2	ASME B18.2.2	1	90490A269	00000
		2"-12	3"	1 23/32"	SAE Grade 2	ASME B18.2.2	1	90490A270	00000
		2 1/4"-4 1/2	3 3/8"	1 15/16"	SAE Grade 2	ASME B18.2.2	1	90490A048	00000
		2 1/4"-12	3 3/8"	1 15/16"	SAE Grade 2	ASME B18.2.2	1	90490A273	00000
		2 1/2"-4	3 3/4"	2 5/32"	SAE Grade 2	ASME B18.2.2	1	90490A051	00000
		2 1/2"-12	3 3/4"	2 5/32"	SAE Grade 2	ASME B18.2.2	1	90490A275	00000


		2 3/4"-4	4 1/8"	2 3/8"	SAE Grade 2	ASME B18.2.2	1	90490A053	00000
		3"-4	4 1/2"	2 19/32"	SAE Grade 2	ASME B18.2.2	1	90490A055	00000
		3"-12	4 1/2"	2 19/32"	SAE Grade 2	ASME B18.2.2	1	90490A280	000000
		3 1/2"-4	5 3/8"	3 1/2"	SAE Grade 2	ASME B18.2.2	1	90490A310	000000
		M2 × 0.4 mm	4 mm	1.6 mm	—	DIN 934	100	90592A004	0000
		M2.5 × 0.45 mm	5 mm	2 mm	—	DIN 934	100	90592A006	0000
		M2.6 × 0.45 mm	5 mm	2 mm	—	DIN 934	100	90592A008	0000
		M3 × 0.5 mm	5.5 mm	2.4 mm	—	DIN 934	100	90592A009	0000
		M3.5 × 0.6 mm	6 mm	2.8 mm	—	DIN 934	100	90592A010	0000
		M4 × 0.7 mm	7 mm	3.2 mm	—	DIN 934	100	90592A011	0000


		M5 × 0.8 mm	8 mm	4 mm	—	DIN 934	100	90592A012	0000
M8 × 1.25 mm		13 mm	6.5 mm	—	DIN 934	1	95505A711	0000
M10 × 1.5 mm	17 mm	8 mm	—	DIN 934	1	95505A712	0000
M12 × 1.75 mm	19 mm	10 mm	—	DIN 934	1	95505A713	0000
M16 × 2 mm	24 mm	13 mm	—	DIN 934	1	95505A715	00000
M20 × 2.5 mm	30 mm	16 mm	—	DIN 934	1	95505A716	00000
M24 × 3 mm	36 mm	19 mm	—	DIN 934	1	95505A717	00000

Low-Strength Steel with Material Certificate

Steel—Best for dry environments since moisture will cause these nuts to rust.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Wd., mm	Ht., mm	Specs. Met	Pkg. Qty.		Pkg.
Steel



	M14 × 2 mm	22	11	DIN 934	1	95505A714	00000
	M30 × 3.5 mm	46	24	DIN 934	1	95505A718	00000
	M36 × 4 mm	55	29	DIN 934	1	95505A719	00000
	M42 × 4.5 mm	65	34	DIN 934	1	95505A721	00000
	M48 × 5 mm	75	38	DIN 934	1	95505A722	00000

Thin-Profile Hex Nuts

About half the height of standard-profile nuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against another hex nut to hold it in place.

Medium-Strength Steel

These Grade 5 or Class 04 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Thread Size	Wd.	Ht.	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Steel



		1/4"-20	7/16"	5/32"	SAE Grade 5	ASME B18.2.2	100	94846A201	00000
		1/4"-28	7/16"	5/32"	SAE Grade 5	ASME B18.2.2	100	94846A202	0000
		5/16"-18	1/2"	3/16"	SAE Grade 5	ASME B18.2.2	50	94846A203	0000
		5/16"-24	1/2"	3/16"	SAE Grade 5	ASME B18.2.2	50	94846A204	0000
		3/8"-16	9/16"	7/32"	SAE Grade 5	ASME B18.2.2	50	94846A205	0000
		3/8"-24	9/16"	7/32"	SAE Grade 5	ASME B18.2.2	50	94846A206	0000
		7/16"-14	11/16"	1/4"	SAE Grade 5	ASME B18.2.2	50	94846A207	0000
		7/16"-20	11/16"	1/4"	SAE Grade 5	ASME B18.2.2	50	94846A208	0000
		1/2"-13	3/4"	5/16"	SAE Grade 5	ASME B18.2.2	25	94846A209	0000
		1/2"-20	3/4"	5/16"	SAE Grade 5	ASME B18.2.2	25	94846A210	0000


		9/16"-12	7/8"	5/16"	SAE Grade 5	ASME B18.2.2	25	94846A211	00000
		9/16"-18	7/8"	5/16"	SAE Grade 5	ASME B18.2.2	25	94846A212	0000
		5/8"-11	15/16"	3/8"	SAE Grade 5	ASME B18.2.2	10	94846A213	0000
		5/8"-18	15/16"	3/8"	SAE Grade 5	ASME B18.2.2	10	94846A214	0000
		3/4"-10	1 1/8"	27/64"	SAE Grade 5	ASME B18.2.2	10	94846A215	0000
		3/4"-16	1 1/8"	27/64"	SAE Grade 5	ASME B18.2.2	10	94846A216	0000
		7/8"-9	1 5/16"	31/64"	SAE Grade 5	ASME B18.2.2	5	94846A217	0000
		7/8"-14	1 5/16"	31/64"	SAE Grade 5	ASME B18.2.2	5	94846A218	0000
		1"-8	1 1/2"	35/64"	SAE Grade 5	ASME B18.2.2	5	94846A219	00000
		1"-12	1 1/2"	35/64"	SAE Grade 5	ASME B18.2.2	1	94846A220	0000


		1"-14	1 1/2"	35/64"	SAE Grade 5	ASME B18.2.2	1	94846A221	0000
		1 1/8"-7	1 11/16"	39/64"	SAE Grade 5	ASME B18.2.2	1	94846A222	0000
		1 1/8"-12	1 11/16"	39/64"	SAE Grade 5	ASME B18.2.2	1	94846A223	0000
		1 1/4"-7	1 7/8"	23/32"	SAE Grade 5	ASME B18.2.2	1	94846A224	0000
		1 1/4"-12	1 7/8"	23/32"	SAE Grade 5	ASME B18.2.2	1	94846A225	0000
		1 3/8"-12	2 1/16"	25/32"	SAE Grade 5	ASME B18.2.2	1	94846A226	00000
		1 1/2"-12	2 1/4"	27/32"	SAE Grade 5	ASME B18.2.2	1	94846A227	0000
		M2 × 0.4 mm	4 mm	1.2 mm	—	DIN 439B, ISO 4035	100	90370A201	0000
		M2.5 × 0.45 mm	5 mm	1.6 mm	—	DIN 439B, ISO 4035	100	90370A202	0000
		M3 × 0.5 mm	5.5 mm	1.8 mm	—	DIN 439B, ISO 4035	100	90370A203	0000


		M4 × 0.7 mm	7 mm	2.2 mm	ISO Class 04	DIN 439B, ISO 4035	100	94168A111	0000
		M5 × 0.8 mm	8 mm	2.7 mm	ISO Class 04	DIN 439B, ISO 4035	100	94168A112	0000
		M6 × 1 mm	10 mm	3.2 mm	ISO Class 04	DIN 439B, ISO 4035	100	94168A113	0000
		M8 × 1 mm	13 mm	4 mm	ISO Class 04	DIN 439B, ISO 4035	50	90326A208	00000
		M8 × 1 mm	13 mm	5 mm	—	DIN 936	50	90364A101	0000
		M8 × 1.25 mm	13 mm	4 mm	ISO Class 04	DIN 439B, ISO 4035	100	94168A114	0000
		M8 × 1.25 mm	13 mm	5 mm	—	DIN 936	50	90370A101	00000
		M10 × 1 mm	17 mm	6 mm	—	DIN 936	25	90364A103	00000
		M10 × 1.25 mm	17 mm	5 mm	ISO Class 04	DIN 439B, ISO 4035	50	90326A209	00000
		M10 × 1.25 mm	17 mm	6 mm	—	DIN 936	25	90364A102	00000


		M10 × 1.5 mm	17 mm	5 mm	ISO Class 04	DIN 439B, ISO 4035	100	94168A115	00000
		M10 × 1.5 mm	17 mm	6 mm	—	DIN 936	25	90370A102	00000
		M12 × 1.25 mm	19 mm	7 mm	—	DIN 936	25	90364A105	00000
		M12 × 1.5 mm	19 mm	6 mm	ISO Class 04	DIN 439B, ISO 4035	25	90326A211	00000
		M12 × 1.5 mm	19 mm	7 mm	—	DIN 936	25	90364A104	00000
		M12 × 1.75 mm	19 mm	6 mm	ISO Class 04	DIN 439B, ISO 4035	50	94168A116	0000
		M12 × 1.75 mm	19 mm	7 mm	—	DIN 936	25	90370A103	00000
		M14 × 1.5 mm	22 mm	7 mm	ISO Class 04	DIN 439B, ISO 4035	50	90326A212	00000
		M14 × 1.5 mm	22 mm	8 mm	—	DIN 936	10	90364A106	0000
		M14 × 2 mm	22 mm	7 mm	—	DIN 439B, ISO 4035	10	90370A211	0000


		M14 × 2 mm	22 mm	8 mm	—	DIN 936	25	90370A104	00000
M16 × 1.5 mm		24 mm	8 mm	—	DIN 936	10	90370A106	0000
M16 × 1.5 mm	24 mm	8 mm	ISO Class 04	DIN 439B, ISO 4035	25	90326A213	00000
M16 × 2 mm	24 mm	8 mm	—	DIN 936	10	90370A105	0000
M16 × 2 mm	24 mm	8 mm	ISO Class 04	DIN 439B, ISO 4035	25	94168A118	0000
M18 × 1.5 mm	27 mm	9 mm	—	DIN 936	10	90364A107	0000
M18 × 1.5 mm	27 mm	9 mm	ISO Class 04	DIN 439B, ISO 4035	10	90326A214	0000
M18 × 2.5 mm	27 mm	9 mm	—	DIN 936	10	90370A107	00000
M20 × 1.5 mm	30 mm	9 mm	—	DIN 936	10	90364A109	00000
M20 × 1.5 mm	30 mm	10 mm	ISO Class 04	DIN 439B, ISO 4035	10	90326A215	0000
M20 × 2 mm	30 mm	9 mm	—	DIN 936	10	90364A108	00000
M20 × 2.5 mm	30 mm	9 mm	—	DIN 936	10	90370A108	00000
M20 × 2.5 mm	30 mm	10 mm	ISO Class 04	DIN 439B, ISO 4035	10	94168A119	0000
M22 × 1.5 mm	32 mm	10 mm	—	DIN 936	10	90364A111	00000
M22 × 1.5 mm	32 mm	11 mm	ISO Class 04	DIN 439B, ISO 4035	10	90326A216	0000
M22 × 2.5 mm	32 mm	10 mm	—	DIN 936	5	90370A109	00000
M22 × 2.5 mm	32 mm	11 mm	—	DIN 439B, ISO 4035	1	90370A214	0000
M24 × 1.5 mm	36 mm	10 mm	—	DIN 936	1	90364A113	0000
M24 × 1.5 mm	36 mm	12 mm	ISO Class 04	DIN 439B, ISO 4035	5	90326A217	00000
M24 × 2 mm	36 mm	10 mm	—	DIN 936	1	90364A112	0000
M24 × 2 mm	36 mm	12 mm	ISO Class 04	DIN 439B, ISO 4035	5	90326A218	00000
M24 × 3 mm	36 mm	10 mm	—	DIN 936	1	90370A111	0000
M24 × 3 mm	36 mm	12 mm	ISO Class 04	DIN 439B, ISO 4035	5	94168A122	0000
M27 × 1.5 mm	41 mm	12 mm	—	DIN 936	1	90364A115	0000
M27 × 1.5 mm	41 mm	13.5 mm	ISO Class 04	DIN 439B, ISO 4035	1	90326A219	00000
M27 × 2 mm	41 mm	12 mm	—	DIN 936	1	90364A114	0000
M27 × 2 mm	41 mm	13.5 mm	ISO Class 04	DIN 439B, ISO 4035	1	90326A221	0000
M27 × 3 mm	41 mm	12 mm	—	DIN 936	1	90370A112	0000
M30 × 1.5 mm	46 mm	12 mm	—	DIN 936	1	90364A117	0000
M30 × 2 mm	46 mm	12 mm	—	DIN 936	1	90364A116	0000
M30 × 2 mm	46 mm	15 mm	ISO Class 04	DIN 439B, ISO 4035	1	90326A222	0000
M30 × 3.5 mm	46 mm	12 mm	—	DIN 936	1	90370A113	0000
M30 × 3.5 mm	46 mm	15 mm	—	DIN 439B, ISO 4035	1	90370A216	0000
M33 × 1.5 mm	50 mm	14 mm	—	DIN 936	1	90364A119	00000
M33 × 2 mm	50 mm	14 mm	—	DIN 936	1	90364A118	0000
M33 × 2 mm	50 mm	16.5 mm	ISO Class 04	DIN 439B, ISO 4035	1	90326A223	00000
M33 × 3.5 mm	50 mm	14 mm	—	DIN 936	1	90370A114	00000
M36 × 1.5 mm	55 mm	14 mm	—	DIN 936	1	90364A123	00000
M36 × 2 mm	55 mm	14 mm	—	DIN 936	1	90364A122	00000
M36 × 3 mm	55 mm	14 mm	—	DIN 936	1	90364A121	00000
M36 × 3 mm	55 mm	18 mm	ISO Class 04	DIN 439B, ISO 4035	1	90326A224	00000
M36 × 4 mm	55 mm	14 mm	—	DIN 936	1	90370A115	00000
M36 × 4 mm	55 mm	18 mm	ISO Class 04	DIN 439B, ISO 4035	1	94168A124	0000
M39 × 3 mm	60 mm	19.5 mm	ISO Class 04	DIN 439B, ISO 4035	1	90326A225	00000
M42 × 1.5 mm	65 mm	16 mm	—	DIN 936	1	90364A125	00000
M42 × 3 mm	65 mm	16 mm	—	DIN 936	1	90364A124	00000
M42 × 3 mm	65 mm	21 mm	ISO Class 04	DIN 439B, ISO 4035	1	90326A226	00000
M42 × 4.5 mm	65 mm	16 mm	—	DIN 936	1	90370A116	00000
M45 × 3 mm	70 mm	22.5 mm	ISO Class 04	DIN 439B, ISO 4035	1	90326A227	00000
M48 × 1.5 mm	75 mm	18 mm	—	DIN 936	1	90364A127	00000
M48 × 3 mm	75 mm	18 mm	—	DIN 936	1	90364A126	00000
M48 × 3 mm	75 mm	24 mm	ISO Class 04	DIN 439B, ISO 4035	1	90326A228	00000
M48 × 5 mm	75 mm	18 mm	—	DIN 936	1	90370A117	00000
M48 × 5 mm	75 mm	24 mm	ISO Class 04	DIN 439B, ISO 4035	1	94168A127	00000
M52 × 3 mm	80 mm	26 mm	ISO Class 04	DIN 439B, ISO 4035	1	90326A229	00000
M52 × 5 mm	80 mm	26 mm	ISO Class 04	DIN 439B, ISO 4035	1	94168A128	00000

High-Strength Steel

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Steel



	1/4"-20	7/16"	5/32"	SAE Grade 8	ASME B18.2.2	50	92052A110	00000
	1/4"-28	7/16"	5/32"	SAE Grade 8	ASME B18.2.2	50	92052A120	0000
	5/16"-18	1/2"	3/16"	SAE Grade 8	ASME B18.2.2	50	92052A130	00000
	5/16"-24	1/2"	3/16"	SAE Grade 8	ASME B18.2.2	50	92052A140	00000
	3/8"-16	9/16"	7/32"	SAE Grade 8	ASME B18.2.2	50	92052A150	00000
	3/8"-24	9/16"	7/32"	SAE Grade 8	ASME B18.2.2	50	92052A160	00000
	7/16"-14	11/16"	1/4"	SAE Grade 8	ASME B18.2.2	25	92052A170	00000
	7/16"-20	11/16"	1/4"	SAE Grade 8	ASME B18.2.2	25	92052A180	00000
	1/2"-13	3/4"	5/16"	SAE Grade 8	ASME B18.2.2	25	92052A190	00000
	1/2"-20	3/4"	5/16"	SAE Grade 8	ASME B18.2.2	10	92052A210	0000


	5/8"-11	15/16"	3/8"	SAE Grade 8	ASME B18.2.2	10	92052A220	00000
	5/8"-18	15/16"	3/8"	SAE Grade 8	ASME B18.2.2	10	92052A230	00000
	3/4"-10	1 1/8"	27/64"	SAE Grade 8	ASME B18.2.2	10	92052A240	00000
	3/4"-16	1 1/8"	27/64"	SAE Grade 8	ASME B18.2.2	10	92052A250	00000
	7/8"-9	1 5/16"	31/64"	SAE Grade 8	ASME B18.2.2	5	92052A260	00000
	7/8"-14	1 5/16"	31/64"	SAE Grade 8	ASME B18.2.2	5	92052A270	00000
	1"-8	1 1/2"	35/64"	SAE Grade 8	ASME B18.2.2	1	92052A280	0000
	1"-12	1 1/2"	35/64"	SAE Grade 8	ASME B18.2.2	1	92052A290	0000
	1"-14	1 1/2"	35/64"	SAE Grade 8	ASME B18.2.2	1	92052A310	0000
	1 1/8"-7	1 11/16"	39/64"	SAE Grade 8	ASME B18.2.2	1	92052A320	0000


	1 1/4"-12	1 7/8"	23/32"	SAE Grade 8	ASME B18.2.2	1	92052A330	00000
	1 3/8"-6	2 1/16"	25/32"	SAE Grade 8	ASME B18.2.2	1	92052A340	00000
	1 3/8"-12	2 1/16"	25/32"	SAE Grade 8	ASME B18.2.2	1	92052A350	00000
	1 1/2"-6	2 1/4"	27/32"	SAE Grade 8	ASME B18.2.2	1	92052A360	00000
	1 1/2"-12	2 1/4"	27/32"	SAE Grade 8	ASME B18.2.2	1	92052A370	00000
	1 3/4"-5	2 5/8"	31/32"	SAE Grade 8	ASME B18.2.2	1	92052A380	00000
	1 3/4"-12	2 5/8"	31/32"	SAE Grade 8	ASME B18.2.2	1	92052A390	00000
	2"-4 1/2	3"	1 3/32"	SAE Grade 8	ASME B18.2.2	1	92052A410	00000
	2"-12	3"	1 3/32"	SAE Grade 8	ASME B18.2.2	1	92052A420	00000

Low-Strength Steel

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Pkg. Qty.		Pkg.
Steel



	1/4"-20	7/16"	5/32"	SAE Grade 2	100	90494A029	00000
	1/4"-28	7/16"	5/32"	SAE Grade 2	100	90494A229	0000
	5/16"-18	1/2"	3/16"	SAE Grade 2	100	90494A030	0000
	5/16"-24	1/2"	3/16"	SAE Grade 2	100	90494A230	0000
	3/8"-16	9/16"	7/32"	SAE Grade 2	100	90494A031	0000
	3/8"-24	9/16"	7/32"	SAE Grade 2	100	90494A231	0000
	7/16"-14	11/16"	1/4"	SAE Grade 2	100	90494A032	0000
	7/16"-20	11/16"	1/4"	SAE Grade 2	100	90494A232	0000
	1/2"-13	3/4"	5/16"	SAE Grade 2	100	90494A033	00000
	1/2"-20	3/4"	5/16"	SAE Grade 2	100	90494A233	00000


	9/16"-18	7/8"	5/16"	SAE Grade 2	100	90494A234	00000
	5/8"-11	15/16"	3/8"	SAE Grade 2	100	90494A035	00000
	5/8"-18	15/16"	3/8"	SAE Grade 2	100	90494A235	00000
	3/4"-10	1 1/8"	27/64"	SAE Grade 2	50	90494A136	00000
	3/4"-16	1 1/8"	27/64"	SAE Grade 2	50	90494A236	00000
	7/8"-9	1 5/16"	31/64"	SAE Grade 2	25	90494A137	00000
	7/8"-14	1 5/16"	31/64"	SAE Grade 2	25	90494A237	00000
	1"-8	1 1/2"	35/64"	SAE Grade 2	20	90494A138	00000
	1"-14	1 1/2"	35/64"	SAE Grade 2	10	90494A238	00000
	1 1/8"-7	1 11/16"	39/64"	SAE Grade 2	10	90494A139	00000


	1 1/8"-12	1 11/16"	39/64"	SAE Grade 2	10	90494A239	00000
	1 1/4"-7	1 7/8"	23/32"	SAE Grade 2	5	90494A140	00000
	1 1/4"-12	1 7/8"	23/32"	SAE Grade 2	5	90494A240	00000
	1 3/8"-12	2 1/16"	25/32"	SAE Grade 2	5	90494A141	00000
	1 1/2"-6	2 1/4"	27/32"	SAE Grade 2	1	90494A142	0000
	1 1/2"-12	2 1/4"	27/32"	SAE Grade 2	1	90494A241	0000
	1 5/8"-12	2 7/16"	29/32"	SAE Grade 2	1	90496A061	0000
	1 3/4"-5	2 5/8"	31/32"	SAE Grade 2	1	90496A063	0000
	1 3/4"-12	2 5/8"	31/32"	SAE Grade 2	1	90496A044	0000
	1 7/8"-12	2 13/16"	1 1/32"	SAE Grade 2	1	90496A065	0000


	2"-4 1/2	3"	1 3/32"	SAE Grade 2	1	90496A066	00000
	2"-12	3"	1 3/32"	SAE Grade 2	1	90496A046	00000
	2 1/4"-12	3 3/8"	1 7/32"	SAE Grade 2	1	90496A048	00000
	2 1/2"-4	3 3/4"	1 13/32"	SAE Grade 2	1	90496A068	00000
	2 1/2"-12	3 3/4"	1 13/32"	SAE Grade 2	1	90496A051	00000
	3"-12	4 1/2"	1 21/32"	SAE Grade 2	1	90496A055	00000

Heavy-Profile Hex Nuts

About 10% wider and taller than standard-profile hex nuts, these handle heavier loads by distributing them over a larger area.

Medium-Strength Steel

These Grade 5 or Class 8 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Pkg. Qty.		Pkg.
Steel



	1/4"-20	1/2"	15/64"	SAE Grade 5	100	95045A029	00000
	5/16"-18	9/16"	19/64"	SAE Grade 5	100	95045A030	00000
	3/8"-16	11/16"	23/64"	SAE Grade 5	50	95045A031	00000
	7/16"-14	3/4"	27/64"	SAE Grade 5	25	95045A032	0000
	1/2"-13	7/8"	31/64"	SAE Grade 5	25	95045A033	00000
	9/16"-12	15/16"	35/64"	SAE Grade 5	25	95045A034	00000
	5/8"-11	1 1/16"	39/64"	SAE Grade 5	10	95045A035	0000
	3/4"-10	1 1/4"	47/64"	SAE Grade 5	10	95045A036	00000
	7/8"-9	1 7/16"	55/64"	SAE Grade 5	5	95045A037	00000
	1"-8	1 5/8"	63/64"	SAE Grade 5	5	95045A038	00000


	1 1/8"-7	1 13/16"	1 7/64"	SAE Grade 5	1	95045A039	0000
	1 1/4"-7	2"	1 7/32"	SAE Grade 5	1	95045A040	0000
	1 3/8"-6	2 3/16"	1 11/32"	SAE Grade 5	1	95045A041	0000
	1 1/2"-6	2 3/8"	1 15/32"	SAE Grade 5	1	95045A042	0000
	1 3/4"-5	2 3/4"	1 23/32"	SAE Grade 5	1	95045A044	00000
	2"-4 1/2	3 1/8"	1 31/32"	SAE Grade 5	1	95045A046	00000
	2 1/4"-4 1/2	3 1/2"	2 13/64"	SAE Grade 5	1	95045A048	00000
	2 1/2"-4	3 7/8"	2 29/64"	SAE Grade 5	1	95045A049	00000

High-Strength Steel

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd., mm	Ht., mm	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Steel



	M12 × 1.75 mm	22	10	ISO Class 10	DIN 6915, ISO 4775	5	91872A120	000000
	M16 × 2 mm	27	13	ISO Class 10	DIN 6915, ISO 4775	5	91872A220	0000
	M20 × 2.5 mm	32	16	ISO Class 10	DIN 6915, ISO 4775	5	91872A320	00000
	M24 × 3 mm	41	19	ISO Class 10	DIN 6915, ISO 4775	1	91872A420	0000
	M30 × 3.5 mm	50	24	ISO Class 10	DIN 6915	1	91872A122	0000

Extreme-Strength Steel

These nuts are about 20% stronger than high-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Thread Size	Wd.	Ht.	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Steel



		1/4"-20	1/2"	15/64"	ASTM Grade 2H	ASTM A194	100	90521A106	000000
		1/4"-28	1/2"	15/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	50	90521A104	00000
		5/16"-18	9/16"	19/64"	ASTM Grade 2H	ASTM A194	50	90521A107	00000
		5/16"-24	9/16"	19/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	50	90521A108	00000
		3/8"-16	11/16"	23/64"	ASTM Grade 2H	ASTM A194	50	90521A225	00000
		3/8"-24	11/16"	23/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	25	90521A229	0000
		7/16"-14	3/4"	27/64"	ASTM Grade 2H	ASTM A194	25	90521A109	00000
		7/16"-20	3/4"	27/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	25	90521A110	00000
		1/2"-13	7/8"	31/64"	ASTM Grade 2H	ASTM A194	25	90521A235	00000
		1/2"-20	7/8"	31/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	25	90521A236	00000


		9/16"-12	15/16"	35/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	10	90521A281	0000
		5/8"-11	1 1/16"	39/64"	ASTM Grade 2H	ASTM A194	10	90521A240	00000
		5/8"-18	1 1/16"	39/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	25	90521A242	00000
		3/4"-10	1 1/4"	47/64"	ASTM Grade 2H	ASTM A194	10	90521A245	00000
		3/4"-16	1 1/4"	47/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	10	90521A247	00000
		7/8"-9	1 7/16"	55/64"	ASTM Grade 2H	ASTM A194	10	90521A250	00000
		7/8"-14	1 7/16"	55/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	10	90521A253	00000
		1"-8	1 5/8"	63/64"	ASTM Grade 2H	ASTM A194	5	90521A255	00000
		1"-12	1 5/8"	63/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	90521A257	0000
		1"-14	1 5/8"	63/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	5	90521A259	00000


		1 1/8"-7	1 13/16"	1 7/64"	ASTM Grade 2H	ASTM A194	1	90521A260	0000
		1 1/8"-8	1 13/16"	1 7/64"	ASTM Grade 2H	ASTM A194	1	90521A265	0000
		1 1/8"-12	1 13/16"	1 7/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	90521A267	0000
		1 1/4"-7	2"	1 7/32"	ASTM Grade 2H	ASTM A194	1	90521A270	0000
		1 1/4"-8	2"	1 7/32"	ASTM Grade 2H	ASTM A194	1	90521A275	0000
		1 1/4"-12	2"	1 7/32"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	90521A278	0000
		1 3/8"-6	2 3/16"	1 11/32"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	90521A290	0000
		1 3/8"-8	2 3/16"	1 11/32"	ASTM Grade 2H	ASTM A194	1	90521A042	0000
		1 3/8"-12	2 3/16"	1 11/32"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	90521A295	0000
		1 1/2"-6	2 3/8"	1 15/32"	ASTM Grade 2H	ASTM A194	1	90521A039	0000


		1 1/2"-8	2 3/8"	1 15/32"	ASTM Grade 2H	ASTM A194	1	90521A041	0000
		1 1/2"-12	2 3/8"	1 15/32"	ASTM Grade 2H	ASTM A194	1	90521A052	0000
		1 5/8"-8	2 9/16"	1 19/32"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	90521A055	0000
		1 3/4"-5	2 3/4"	1 23/32"	ASTM Grade 2H	ASTM A194	1	90521A043	00000
		1 3/4"-8	2 3/4"	1 23/32"	ASTM Grade 2H	ASTM A194	1	90521A044	00000
		1 7/8"-8	2 15/16"	1 27/32"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	90521A037	00000
		2"-4 1/2	3 1/8"	1 31/32"	ASTM Grade 2H	ASTM A194	1	90521A038	00000
		2"-8	3 1/8"	1 31/32"	ASTM Grade 2H	ASTM A194	1	90521A046	00000
		2 1/4"-4 1/2	3 1/2"	2 13/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	90521A282	00000
		2 1/4"-8	3 1/2"	2 13/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	90521A050	00000


		2 1/2"-4	3 7/8"	2 29/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	90521A283	00000
		M10 × 1.5 mm	19 mm	12 mm	ASTM Grade 2H	ASTM A194	5	98498A111	0000
		M12 × 1.75 mm	21 mm	12 mm	ASTM Grade 2H	ASTM A194, DIN 6915	5	98498A100	0000
		M14 × 2 mm	24 mm	14 mm	ASTM Grade 2H	ASTM A194, DIN 6915	5	98498A112	0000
		M16 × 2 mm	27 mm	17 mm	ASTM Grade 2H	ASTM A194, DIN 6915	5	98498A300	0000
		M18 × 2.5 mm	30 mm	19 mm	ASTM Grade 2H	ASTM A194, DIN 6915	5	98498A113	00000
		M20 × 2.5 mm	33 mm	20 mm	ASTM Grade 2H	ASTM A194, DIN 6915	5	98498A500	00000
		M22 × 2.5 mm	36 mm	23 mm	ASTM Grade 2H	ASTM A194, DIN 6915	1	98498A114	0000
		M24 × 3 mm	41 mm	24 mm	ASTM Grade 2H	ASTM A194, DIN 6915	1	98498A600	0000
		M27 × 3 mm	46 mm	27 mm	ASTM Grade 2H	ASTM A194, DIN 6915	1	98498A115	0000


		M30 × 3.5 mm	50 mm	30 mm	ASTM Grade 2H	ASTM A194, DIN 6915	1	98498A700	00000
M33 × 3.5 mm		55 mm	33 mm	ASTM Grade 2H	ASTM A194, DIN 6915	1	98498A116	00000
M36 × 3 mm	60 mm	36 mm	ASTM Grade 2H	ASTM A194, DIN 6915	1	98498A123	00000
M36 × 4 mm	60 mm	36 mm	ASTM Grade 2H	ASTM A194, DIN 6915	1	98498A800	00000
M39 × 4 mm	65 mm	39 mm	ASTM Grade 2H	ASTM A194	1	98498A117	00000
M42 × 3 mm	70 mm	42 mm	ASTM Grade 2H	ASTM A194	1	98498A140	00000
M42 × 4.5 mm	70 mm	42 mm	ASTM Grade 2H	ASTM A194	1	98498A118	00000
M45 × 4.5 mm	75 mm	45 mm	ASTM Grade 2H	ASTM A194	1	98498A211	00000
M48 × 3 mm	80 mm	48 mm	ASTM Grade 2H	ASTM A194	1	98498A212	00000
M48 × 5 mm	80 mm	48 mm	ASTM Grade 2H	ASTM A194	1	98498A119	00000
M52 × 5 mm	85 mm	52 mm	ASTM Grade 2H	ASTM A194	1	98498A121	00000
M56 × 5.5 mm	90 mm	56 mm	ASTM Grade 2H	ASTM A194	1	98498A213	00000
M64 × 6 mm	100 mm	64 mm	ASTM Grade 2H	ASTM A194	1	98498A122	00000

Low-Strength Steel

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Specs. Met	Pkg. Qty.		Pkg.
Steel



	1/4"-20	1/2"	15/64"	ASME B18.2.2	100	90498A029	00000
	5/16"-18	9/16"	19/64"	ASME B18.2.2	100	90498A030	0000
	3/8"-16	11/16"	23/64"	ASME B18.2.2	100	90498A031	00000
	7/16"-14	3/4"	27/64"	ASME B18.2.2	50	90498A032	00000
	1/2"-13	7/8"	31/64"	ASME B18.2.2	50	90498A033	00000
	9/16"-12	15/16"	35/64"	ASME B18.2.2, SAE J995	25	90498A345	0000
	5/8"-11	1 1/16"	39/64"	ASME B18.2.2	25	90498A355	00000
	3/4"-10	1 1/4"	47/64"	ASME B18.2.2	25	90498A365	00000
	1"-8	1 5/8"	63/64"	ASME B18.2.2	5	90498A385	00000
	1 1/8"-7	1 13/16"	1 7/64"	ASME B18.2.2	5	90498A395	00000


	1 1/4"-7	2"	1 7/32"	ASME B18.2.2	5	90498A410	00000
	1 3/8"-6	2 3/16"	1 11/32"	ASME B18.2.2	1	90498A042	0000
	1 1/2"-6	2 3/8"	1 15/32"	ASME B18.2.2	1	90498A041	0000
	2"-4 1/2	3 1/8"	1 31/32"	ASME B18.2.2	1	90498A046	00000

Heavy-Profile Hex Nuts for High-Pressure Applications

These nuts are hardened, so they maintain their strength under high pressure and temperature. Pair them with ASTM A193 screws to fasten critical components, such as valves and flanges, in pressure tanks, boilers, and heat exchangers. About 10% wider and taller than standard-profile hex nuts, these handle heavier loads by distributing them over a larger area.

High-Strength Steel

Rated Grade 7 or Grade 8, these nuts are about 25% stronger than medium-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Steel



	1/4"-20	1/2"	15/64"	ASTM Grade 7	ASTM A194	10	94485A121	00000
	3/8"-16	11/16"	23/64"	ASTM Grade 7	ASTM A194	10	94485A029	0000
	1/2"-13	7/8"	31/64"	ASTM Grade 7	ASTM A194	10	94485A033	00000
	5/8"-11	1 1/16"	39/64"	ASTM Grade 7	ASTM A194	10	94485A035	00000
	3/4"-10	1 1/4"	47/64"	ASTM Grade 7	ASTM A194	10	94485A036	00000
	7/8"-9	1 7/16"	55/64"	ASTM Grade 7	ASTM A194	5	94485A037	0000
	1"-8	1 5/8"	63/64"	ASTM Grade 7	ASTM A194	5	94485A038	00000
	1 1/8"-7	1 13/16"	1 7/64"	ASTM Grade 7	ASTM A194	1	94485A041	0000
	1 1/8"-8	1 13/16"	1 7/64"	ASTM Grade 7	ASTM A194	1	94485A111	0000
	1 1/4"-7	2"	1 7/32"	ASTM Grade 7	ASTM A194	1	94485A044	0000


	1 1/4"-8	2"	1 7/32"	ASTM Grade 7	ASTM A194	1	94485A112	0000

High-Profile Hex Nuts

Slightly taller than standard-profile hex nuts, these have a larger gripping area so your wrench or socket won't slip off as you tighten them. They're often used in vehicles and machinery where fasteners can be difficult to reach.

High-Strength Steel

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Steel



	3/8"-16	9/16"	17/32"	SAE Grade 8	SAE J995	1	90565A120	00000
	3/8"-24	9/16"	17/32"	SAE Grade 8	SAE J995	1	90565A360	00000
	7/16"-20	5/8"	39/64"	SAE Grade 8	SAE J995	25	90565A325	00000
	1/2"-13	3/4"	11/16"	SAE Grade 8	SAE J995	1	90565A140	0000
	1/2"-20	3/4"	11/16"	SAE Grade 8	SAE J995	25	90565A330	00000
	9/16"-18	7/8"	49/64"	SAE Grade 8	SAE J995	10	90565A333	0000
	5/8"-11	15/16"	27/32"	SAE Grade 8	SAE J995	1	90565A160	0000
	5/8"-18	15/16"	27/32"	SAE Grade 8	SAE J995	10	90565A335	00000
	3/4"-10	1 1/16"	1"	SAE Grade 8	SAE J995	1	90565A180	00000
	3/4"-16	1 1/8"	1"	SAE Grade 8	SAE J995	10	90565A340	00000


	7/8"-14	1 5/16"	1 5/32"	SAE Grade 8	SAE J995	5	90565A345	00000
	1"-8	1 1/2"	1 5/16"	SAE Grade 8	SAE J995	1	90565A220	00000
	1"-14	1 7/16"	1 5/16"	SAE Grade 8	SAE J995	5	90565A350	00000
	1 1/4"-12	1 13/16"	1 5/8"	SAE Grade 8	SAE J995	1	90565A355	00000
	1 1/2"-12	2 3/16"	2"	SAE Grade 8	SAE J995	1	90565A061	00000

Left-Hand-Thread Heavy-Profile Hex Nuts

These nuts tighten when turned to the left. Use them with left-hand rods and screws to prevent counterclockwise-moving parts from loosening. About 10% wider and taller than standard-profile hex nuts, these handle heavier loads by distributing them over a larger area.

Medium-Strength Steel

These Grade 5 or Class 8 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Pkg. Qty.		Pkg.
Steel



	1/4"-20	1/2"	15/64"	SAE Grade 5	25	90570A710	00000
	3/8"-16	11/16"	23/64"	SAE Grade 5	10	90570A720	0000
	1/2"-13	7/8"	31/64"	SAE Grade 5	10	90570A725	00000
	5/8"-11	1 1/16"	39/64"	SAE Grade 5	5	90570A730	0000
	3/4"-10	1 1/4"	47/64"	SAE Grade 5	5	90570A735	00000
	1"-8	1 5/8"	63/64"	SAE Grade 5	1	90570A038	0000

Left-Hand-Thread Hex Nuts

These nuts tighten when turned to the left. Use them with left-hand rods and screws to prevent counterclockwise-moving parts from loosening.

Medium-Strength Steel

Image of Product. Front orientation. Contains Annotated, MultipleImages. Hex Nuts. Left-Hand-Thread Hex Nuts.

These Grade 5 or Class 8 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Pkg. Qty.		Pkg.
Steel



	1/4"-20	7/16"	7/32"	SAE Grade 5	100	95140A111	000000
	1/4"-28	7/16"	7/32"	SAE Grade 5	100	95140A115	00000
	5/16"-18	1/2"	17/64"	SAE Grade 5	50	95140A119	0000
	5/16"-24	1/2"	17/64"	SAE Grade 5	50	95140A123	0000
	3/8"-16	9/16"	21/64"	SAE Grade 5	50	95140A127	00000
	3/8"-24	9/16"	21/64"	SAE Grade 5	50	95140A131	00000
	7/16"-14	11/16"	3/8"	SAE Grade 5	25	95140A135	0000
	7/16"-20	11/16"	3/8"	SAE Grade 5	25	95140A139	0000
	1/2"-13	3/4"	7/16"	SAE Grade 5	25	95140A143	00000
	1/2"-20	3/4"	7/16"	SAE Grade 5	25	95140A147	00000


	9/16"-18	7/8"	31/64"	SAE Grade 5	25	95140A153	00000
	5/8"-11	15/16"	35/64"	SAE Grade 5	10	95140A155	0000
	5/8"-18	15/16"	35/64"	SAE Grade 5	10	95140A159	0000
	3/4"-10	1 1/8"	41/64"	SAE Grade 5	10	95140A163	00000
	3/4"-16	1 1/8"	41/64"	SAE Grade 5	10	95140A165	00000
	7/8"-9	1 5/16"	3/4"	SAE Grade 5	5	95140A167	00000
	7/8"-14	1 5/16"	3/4"	SAE Grade 5	5	95140A169	00000
	1"-8	1 1/2"	55/64"	SAE Grade 5	1	95140A171	0000
	1 1/8"-7	1 11/16"	31/32"	SAE Grade 5	1	95140A175	0000
	1 1/4"-7	1 7/8"	1 1/16"	SAE Grade 5	1	95140A177	0000


	1 1/4"-12	1 7/8"	1 1/16"	SAE Grade 5	1	95140A179	0000
	1 1/2"-6	2 1/4"	1 9/32"	SAE Grade 5	1	95140A181	00000

Low-Strength Steel

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Pkg. Qty.		Pkg.
Steel



	1/4"-20	7/16"	7/32"	SAE Grade 2	100	90519A029	000000
	1/4"-28	7/16"	7/32"	SAE Grade 2	100	90519A205	00000
	3/8"-16	9/16"	21/64"	SAE Grade 2	25	90519A031	0000
	3/8"-24	9/16"	21/64"	SAE Grade 2	50	90519A215	00000
	1/2"-20	3/4"	7/16"	SAE Grade 2	25	90519A235	00000
	5/8"-11	15/16"	35/64"	SAE Grade 2	10	90519A240	00000
	5/8"-18	15/16"	35/64"	SAE Grade 2	10	90519A245	00000
	3/4"-10	1 1/8"	41/64"	SAE Grade 2	5	90519A247	0000
	3/4"-16	1 1/8"	41/64"	SAE Grade 2	10	90519A250	00000
	1"-8	1 1/2"	55/64"	SAE Grade 2	1	90519A257	0000


	1"-14	1 1/2"	55/64"	SAE Grade 2	1	90519A260	0000
	1 1/8"-7	1 11/16"	31/32"	SAE Grade 2	1	90519A039	0000
	1 1/4"-7	1 7/8"	1 1/16"	SAE Grade 2	1	90519A040	00000
	1 1/4"-12	1 7/8"	1 1/16"	SAE Grade 2	1	90519A266	00000
	1 1/2"-6	2 1/4"	1 9/32"	SAE Grade 2	1	90519A041	00000

Left-Hand-Thread Thin-Profile Hex Nuts

These nuts tighten when turned to the left. Use them with left-hand rods and screws to prevent counterclockwise-moving parts from loosening. About half the height of standard-profile nuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against another hex nut to hold it in place.

Low-Strength Steel

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Pkg. Qty.		Pkg.
Steel



	1/4"-20	7/16"	5/32"	SAE Grade 2	50	90083A029	00000
	1/4"-28	7/16"	5/32"	SAE Grade 2	100	90083A205	00000
	5/16"-18	1/2"	3/16"	SAE Grade 2	50	90083A030	0000
	5/16"-24	1/2"	3/16"	SAE Grade 2	100	90083A210	00000
	3/8"-16	9/16"	7/32"	SAE Grade 2	25	90083A031	0000
	3/8"-24	9/16"	7/32"	SAE Grade 2	50	90083A215	00000
	1/2"-13	3/4"	5/16"	SAE Grade 2	25	90083A222	00000
	1/2"-20	3/4"	5/16"	SAE Grade 2	25	90083A225	00000
	5/8"-11	15/16"	3/8"	SAE Grade 2	10	90083A230	00000
	5/8"-18	15/16"	3/8"	SAE Grade 2	10	90083A235	00000


	3/4"-10	1 1/8"	27/64"	SAE Grade 2	10	90083A240	00000
	3/4"-16	1 1/8"	27/64"	SAE Grade 2	10	90083A245	00000
	1"-8	1 1/2"	35/64"	SAE Grade 2	5	90083A255	00000
	1"-14	1 1/2"	35/64"	SAE Grade 2	5	90083A260	00000

Mil. Spec. Hex Nuts

These nuts are manufactured and tested to strict U.S. military standards for material and construction.

Low-Strength Steel

Image of Product. Front orientation. Hex Nuts. Mil. Spec. Hex Nuts.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Mil. Spec.	Fastener Strength Grade/Class	Pkg. Qty.		Pkg.
Steel



	2"-4 1/2	3"	1 23/32"	MIL-DTL-1222	SAE Grade 2	1	90490A046	000000

Narrow-Profile Hex Nuts

When you have limited space for tightening with a wrench, use these nuts. Since they’re about 20% narrower, they fit in tight spots where standard-profile nuts won't fit. Also known as small-pattern hex nuts.

Steel

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Pkg. Qty.		Pkg.
Steel



	4-40	3/16"	1/16"	100	90760A210	00000

Structural Heavy-Profile Hex Nuts

These nuts are designed to secure ASTM A325 screws in structural joints, such as mating I-beams, columns, and joists. About 10% wider and taller than standard-profile hex nuts, they handle heavier loads by distributing them over a larger area.

High-Strength Steel

Rated Grade 8, Grade C, or Class 10, these nuts are about 25% stronger than medium-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Steel



	1/2"-13	7/8"	31/64"	ASTM Grade C	ASTM A563	25	90580A315	000000
	5/8"-11	1 1/16"	39/64"	ASTM Grade C	ASTM A563	10	90580A320	0000
	3/4"-10	1 1/4"	47/64"	ASTM Grade C	ASTM A563	10	90580A325	00000
	7/8"-9	1 7/16"	55/64"	ASTM Grade C	ASTM A563	10	90580A330	00000
	1"-8	1 5/8"	63/64"	ASTM Grade C	ASTM A563	5	90580A335	00000
	1 1/8"-7	1 3/4"	1 7/64"	ASTM Grade C	ASTM A563	1	90580A844	0000
	1 1/4"-7	2"	1 7/32"	ASTM Grade C	ASTM A563	1	90580A345	0000
	1 1/2"-6	2 3/8"	1 15/32"	ASTM Grade C	ASTM A563	1	90580A957	00000

Extreme-Strength Steel

Rated Grade DH, these nuts are about 20% stronger than high-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Steel



	1/2"-13	7/8"	31/64"	ASTM Grade DH	ASTM A563	25	98427A150	000000
	5/8"-11	1 1/16"	39/64"	ASTM Grade DH	ASTM A563	10	98427A200	00000
	3/4"-10	1 1/4"	47/64"	ASTM Grade DH	ASTM A563	10	98427A250	00000
	7/8"-9	1 7/16"	55/64"	ASTM Grade DH	ASTM A563	5	98427A300	00000
	1"-8	1 5/8"	63/64"	ASTM Grade DH	ASTM A563	1	98427A350	0000
	1 1/8"-7	1 13/16"	1 7/64"	ASTM Grade DH	ASTM A563	1	98427A400	0000
	1 1/4"-7	2"	1 7/32"	ASTM Grade DH	ASTM A563	1	98427A450	0000
	1 1/2"-6	2 3/8"	1 15/32"	ASTM Grade DH	ASTM A563	1	98427A600	00000

Thin-Heavy-Profile Hex Nuts

About half the height of standard-profile hex nuts and 10% wider, these fit in spaces with low clearance and handle heavier loads by distributing them over a larger area. You can also use them as jam nuts by threading them against another hex nut to hold it in place.

Extreme-Strength Steel

These nuts are about 20% stronger than high-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Steel



	1/4"-20	1/2"	11/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	95010A130	00000
	3/8"-16	11/16"	15/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	5	95010A140	00000
	7/16"-14	3/4"	17/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	95010A145	0000
	1/2"-13	7/8"	19/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	5	95010A150	00000
	5/8"-11	1 1/16"	23/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	95010A160	0000
	3/4"-10	1 1/4"	27/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	95010A165	0000
	7/8"-9	1 7/16"	31/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	95010A170	0000
	1"-8	1 5/8"	35/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	95010A175	0000
	1 1/8"-7	1 13/16"	39/64"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	95010A180	0000
	1 1/4"-7	2"	23/32"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	95010A190	0000


	1 3/8"-6	2 3/16"	25/32"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	95010A320	0000
	1 1/2"-6	2 3/8"	27/32"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	95010A210	0000
	1 3/4"-5	2 3/4"	31/32"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	95010A220	00000
	2"-4 1/2	3 1/8"	1 3/32"	ASTM Grade 2H	ASME B18.2.2, ASTM A194	1	95010A240	00000

Low-Strength Steel

Steel—Best for dry environments since moisture will cause these nuts to rust.

	Wd.	Ht.	Fastener Strength Grade/Class	Pkg. Qty.		Pkg.
Steel



	1/4"-20	1/2"	11/64"	SAE Grade 2	100	90502A029	00000
	5/16"-18	9/16"	13/64"	SAE Grade 2	100	90502A030	0000
	3/8"-16	11/16"	15/64"	SAE Grade 2	100	90502A031	00000
	7/16"-14	3/4"	17/64"	SAE Grade 2	50	90502A032	0000
	1/2"-13	7/8"	19/64"	SAE Grade 2	50	90502A033	00000
	5/8"-11	1 1/16"	23/64"	SAE Grade 2	25	90502A410	00000
	3/4"-10	1 1/4"	27/64"	SAE Grade 2	25	90502A415	00000
	7/8"-9	1 7/16"	31/64"	SAE Grade 2	10	90502A420	00000
	1"-8	1 5/8"	35/64"	SAE Grade 2	10	90502A425	00000
	1 1/8"-7	1 13/16"	39/64"	SAE Grade 2	5	90502A430	00000


	1 1/4"-7	2"	23/32"	SAE Grade 2	5	90502A435	00000
	1 1/2"-6	2 3/8"	27/32"	SAE Grade 2	1	90502A440	0000
	1 3/4"-5	2 3/4"	31/32"	SAE Grade 2	1	90502A044	0000
	2"-4 1/2	3 1/8"	1 3/32"	SAE Grade 2	1	90502A046	00000
	2 1/2"-4	3 7/8"	1 29/64"	SAE Grade 2	1	90502A049	00000