Left-Hand Threaded Thin Hex Nuts

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208 Products

About Hex Nuts

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

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.

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.

Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.

Black-Oxide Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.

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



	1/4"-20	7/16"	5/32"	SAE Grade 5	—	100	99612A100	000000
	1/4"-28	7/16"	5/32"	SAE Grade 5	—	100	99612A105	00000
	5/16"-18	1/2"	3/16"	SAE Grade 5	—	50	99612A110	00000
	5/16"-24	1/2"	3/16"	SAE Grade 5	—	50	99612A112	00000
	3/8"-16	9/16"	7/32"	SAE Grade 5	—	50	99612A117	00000
	3/8"-24	9/16"	7/32"	SAE Grade 5	—	50	99612A119	00000
	7/16"-14	11/16"	1/4"	SAE Grade 5	—	50	99612A270	00000
	7/16"-20	11/16"	1/4"	SAE Grade 5	—	25	99612A127	00000
	1/2"-13	3/4"	5/16"	SAE Grade 5	—	25	99612A133	00000
	1/2"-20	3/4"	5/16"	SAE Grade 5	—	25	99612A136	00000


	9/16"-18	7/8"	5/16"	SAE Grade 5	—	10	99612A260	00000
	5/8"-11	15/16"	3/8"	SAE Grade 5	—	10	99612A156	0000
	5/8"-18	15/16"	3/8"	SAE Grade 5	—	10	99612A159	0000
	3/4"-10	1 1/8"	27/64"	SAE Grade 5	—	10	99612A162	00000
	3/4"-16	1 1/8"	27/64"	SAE Grade 5	—	10	99612A164	00000
	7/8"-9	1 5/16"	31/64"	SAE Grade 5	—	5	99612A175	00000
	7/8"-14	1 5/16"	31/64"	SAE Grade 5	—	5	99612A178	00000
	1"-8	1 1/2"	35/64"	SAE Grade 5	—	1	99612A182	0000
	1"-14	1 1/2"	35/64"	SAE Grade 5	—	1	99612A186	0000
	1 1/8"-7	1 11/16"	39/64"	SAE Grade 5	—	1	99612A280	00000


	1 1/8"-12	1 11/16"	39/64"	SAE Grade 5	—	1	99612A197	0000
	1 1/4"-7	1 7/8"	23/32"	SAE Grade 5	—	1	99612A201	0000
	1 1/4"-12	1 7/8"	23/32"	SAE Grade 5	—	1	99612A204	00000
	1 1/2"-6	2 1/4"	27/32"	SAE Grade 5	—	1	99612A224	00000
	1 1/2"-12	2 1/4"	27/32"	SAE Grade 5	—	1	99612A227	00000
	2"-12	3"	1 3/32"	SAE Grade 5	—	1	99612A290	000000


	Black-Oxide Steel



			M3 × 0.5 mm	5.5 mm	1.8 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A811	0000
			M5 × 0.8 mm	8 mm	2.7 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A813	0000
			M6 × 0.75 mm	10 mm	3.2 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A832	0000
			M8 × 1 mm	13 mm	4 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A833	0000
			M8 × 1.25 mm	13 mm	4 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A815	0000
			M10 × 1 mm	17 mm	5 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A834	0000
			M10 × 1.5 mm	17 mm	5 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A816	0000
			M12 × 1.75 mm	19 mm	6 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A817	0000
			M14 × 1.5 mm	22 mm	7 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A836	0000
			M16 × 1.5 mm	24 mm	8 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A837	0000


			M16 × 2 mm	24 mm	8 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A819	0000
			M18 × 1.5 mm	27 mm	9 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A838	0000
			M18 × 2.5 mm	27 mm	9 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A821	0000
			M20 × 1.5 mm	30 mm	10 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A839	00000
			M20 × 2.5 mm	30 mm	10 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A822	00000
			M22 × 1.5 mm	32 mm	11 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A841	00000
			M22 × 2.5 mm	32 mm	11 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A823	00000
			M24 × 1.5 mm	36 mm	12 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A842	00000
			M30 × 1.5 mm	46 mm	15 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A846	00000
			M30 × 2 mm	46 mm	15 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A845	00000


			M33 × 3.5 mm	50 mm	16.5 mm	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A827	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.

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



	5-40	5/16"	3/32"	SAE Grade 2	ASTM A108	1	90519A851	00000
	8-32	11/32"	7/64"	SAE Grade 2	ASTM A108	1	90519A855	0000
	10-24	3/8"	7/64"	SAE Grade 2	ASTM A108	1	90519A857	0000
	10-32	3/8"	7/64"	SAE Grade 2	ASTM A108	1	90519A858	0000
	3/8"-16	9/16"	7/32"	SAE Grade 2	ASTM A108	1	90519A866	0000
	3/8"-24	9/16"	7/32"	SAE Grade 2	ASTM A108	1	90519A867	0000
	1/2"-13	3/4"	5/16"	SAE Grade 2	ASTM A108	1	90519A871	0000
	1/2"-20	3/4"	5/16"	SAE Grade 2	ASTM A108	1	90519A872	0000
	5/8"-11	15/16"	3/8"	SAE Grade 2	ASTM A108	1	90519A875	0000
	7/8"-20	1 5/16"	31/64"	SAE Grade 2	ASTM A108	1	90519A882	00000


	1"-12	1 1/2"	35/64"	SAE Grade 2	ASTM A108	1	90519A884	00000
	1 1/4"-7	1 7/8"	23/32"	SAE Grade 2	ASTM A108	1	90519A888	00000
	1 1/4"-12	1 7/8"	23/32"	SAE Grade 2	ASTM A108	1	90519A889	00000
	1 1/2"-6	2 1/4"	27/32"	SAE Grade 2	ASTM A108	1	90519A891	00000
	2"-4 1/2	3"	1 3/32"	SAE Grade 2	ASTM A108	1	90519A895	00000
	2"-12	3"	1 3/32"	SAE Grade 2	ASTM A108	1	90519A896	00000


	Steel



			1/4"-20	7/16"	5/32"	SAE Grade 2	—	50	90083A029	0000
			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

Corrosion-Resistant Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.

	Thread Size	Wd.	Ht.	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



		4-40	1/4"	1/16"	—	1	94450A511	00000
		5-40	5/16"	3/32"	—	1	94450A513	0000
		6-32	5/16"	3/32"	—	1	94450A515	0000
		8-32	11/32"	7/64"	—	1	94450A517	0000
		10-24	3/8"	7/64"	—	1	94450A519	0000
		10-32	3/8"	7/64"	—	1	94450A521	0000
		12-24	7/16"	9/64"	—	1	94450A522	0000
		1/4"-20	7/16"	5/32"	—	5	94450A218	0000
		1/4"-28	7/16"	5/32"	—	5	94450A220	0000
		5/16"-18	1/2"	3/16"	—	5	94450A238	0000


		5/16"-24	1/2"	3/16"	—	5	94450A240	0000
		3/8"-16	9/16"	7/32"	—	5	94450A257	0000
		3/8"-24	9/16"	7/32"	—	5	94450A260	0000
		7/16"-14	11/16"	1/4"	ASME B18.2.2	1	94450A524	0000
		7/16"-20	11/16"	1/4"	ASME B18.2.2	1	94450A525	0000
		1/2"-13	3/4"	5/16"	—	5	94450A270	0000
		1/2"-20	3/4"	5/16"	—	5	94450A280	00000
		9/16"-12	7/8"	5/16"	ASME B18.2.2	1	94450A526	0000
		9/16"-18	7/8"	5/16"	ASME B18.2.2	1	94450A527	0000
		5/8"-11	15/16"	3/8"	—	1	94450A310	0000


		5/8"-18	15/16"	3/8"	—	1	94450A315	0000
		3/4"-10	1 1/8"	27/64"	—	1	94450A331	0000
		3/4"-16	1 1/8"	27/64"	—	1	94450A336	0000
		7/8"-9	1 5/16"	31/64"	ASME B18.2.2	1	94450A528	00000
		7/8"-14	1 5/16"	31/64"	ASME B18.2.2	1	94450A529	00000
		7/8"-20	1 5/16"	31/64"	ASME B18.2.2	1	94450A531	00000
		1"-8	1 1/2"	35/64"	ASME B18.2.2	1	94450A532	00000
		1"-12	1 1/2"	35/64"	ASME B18.2.2	1	94450A533	00000
		1"-14	1 1/2"	35/64"	ASME B18.2.2	1	94450A534	00000
		1 1/4"-12	1 7/8"	23/32"	ASME B18.2.2	1	94450A538	00000


		1 1/2"-6	2 1/4"	27/32"	ASME B18.2.2	1	94450A539	00000
		1 1/2"-12	2 1/4"	27/32"	ASME B18.2.2	1	94450A541	00000
		2"-4 1/2	3"	1 3/32"	ASME B18.2.2	1	94450A544	00000
		2"-12	3"	1 3/32"	ASME B18.2.2	1	94450A545	00000
		M3 × 0.5 mm	5.5 mm	1.8 mm	DIN 439B	1	94450A546	0000
		M4 × 0.5 mm	7 mm	2.2 mm	DIN 439B	1	94450A565	0000
		M4 × 0.7 mm	7 mm	2.2 mm	DIN 439B	1	94450A547	0000
		M5 × 0.5 mm	8 mm	2.7 mm	DIN 439B	1	94450A566	0000
		M5 × 0.8 mm	8 mm	2.7 mm	DIN 439, ISO 4035	10	94450A111	0000
		M6 × 0.75 mm	10 mm	3.2 mm	DIN 439B	1	94450A567	0000


		M6 × 1 mm	10 mm	3.2 mm	DIN 439, ISO 4035	10	94450A112	0000
		M6 × 1 mm	10 mm	3.2 mm	DIN 439B	1	94450A549	0000
		M8 × 1 mm	13 mm	4 mm	DIN 439, ISO 4035	5	94450A114	0000
		M8 × 1.25 mm	13 mm	4 mm	DIN 439, ISO 4035	10	94450A113	0000
		M8 × 1.25 mm	13 mm	4 mm	DIN 439B	1	94450A551	0000
		M10 × 1 mm	17 mm	5 mm	DIN 439B	1	94450A569	0000
		M10 × 1.25 mm	17 mm	5 mm	DIN 439, ISO 4035	1	94450A116	0000
		M10 × 1.5 mm	17 mm	5 mm	DIN 439, ISO 4035	5	94450A115	0000
		M10 × 1.5 mm	17 mm	5 mm	DIN 439B	1	94450A552	0000
		M12 × 1.25 mm	19 mm	6 mm	DIN 439, ISO 4035	1	94450A118	0000


		M12 × 1.75 mm	19 mm	6 mm	DIN 439, ISO 4035	1	94450A117	0000
M12 × 1.75 mm		19 mm	6 mm	DIN 439B	1	94450A553	0000
M14 × 1.5 mm	22 mm	7 mm	DIN 439B	1	94450A572	0000
M14 × 2 mm	22 mm	7 mm	DIN 439, ISO 4035	1	94450A119	0000
M16 × 1.5 mm	24 mm	8 mm	DIN 439, ISO 4035	1	94450A122	0000
M16 × 1.5 mm	24 mm	8 mm	DIN 439B	1	94450A573	0000
M16 × 2 mm	24 mm	8 mm	DIN 439, ISO 4035	1	94450A121	0000
M16 × 2 mm	24 mm	8 mm	DIN 439B	1	94450A555	0000
M20 × 1.5 mm	30 mm	10 mm	DIN 439B	1	94450A575	00000
M20 × 2.5 mm	30 mm	10 mm	DIN 439, ISO 4035	1	94450A124	0000
M22 × 1.5 mm	32 mm	11 mm	DIN 439B	1	94450A576	00000
M22 × 2.5 mm	32 mm	11 mm	DIN 439B	1	94450A558	00000
M24 × 1.5 mm	36 mm	12 mm	DIN 439B	1	94450A577	00000
M24 × 3 mm	36 mm	12 mm	DIN 439, ISO 4035	1	94450A125	00000
M27 × 1.5 mm	41 mm	13.5 mm	DIN 439B	1	94450A579	00000
M30 × 1.5 mm	46 mm	15 mm	DIN 439B	1	94450A582	00000
M30 × 2 mm	46 mm	15 mm	DIN 439B	1	94450A581	00000

Super-Corrosion-Resistant 316 Stainless Steel



		4-40	1/4"	1/16"	—	1	93031A148	0000
		6-32	5/16"	3/32"	—	1	93031A153	0000
		8-32	11/32"	7/64"	—	1	93031A155	0000
		10-24	3/8"	7/64"	—	1	93031A157	0000
		10-32	3/8"	7/64"	—	1	93031A158	0000
		1/4"-20	7/16"	5/32"	—	1	93031A162	0000
		1/4"-28	7/16"	5/32"	—	1	93031A163	0000
		5/16"-24	1/2"	3/16"	—	1	93031A165	0000
		3/8"-16	9/16"	7/32"	—	1	93031A166	0000
		3/8"-24	9/16"	7/32"	—	1	93031A167	0000


		7/16"-20	11/16"	1/4"	—	1	93031A169	0000
		1/2"-13	3/4"	5/16"	—	1	93031A171	0000
		1/2"-20	3/4"	5/16"	—	1	93031A172	0000
		9/16"-18	7/8"	5/16"	—	1	93031A174	00000
		5/8"-18	15/16"	3/8"	—	1	93031A176	00000
		3/4"-10	1 1/8"	27/64"	—	1	93031A177	00000
		3/4"-16	1 1/8"	27/64"	—	1	93031A178	00000
		1"-12	1 1/2"	35/64"	—	1	93031A184	00000
		1"-14	1 1/2"	35/64"	—	1	93031A185	00000
		1 1/4"-12	1 7/8"	23/32"	—	1	93031A189	00000


		1 1/2"-6	2 1/4"	27/32"	—	1	93031A191	00000
		2"-12	3"	1 3/32"	—	1	93031A196	00000
		M6 × 0.75 mm	10 mm	3.2 mm	DIN 439B, ISO 4035	1	93031A132	0000
		M6 × 1 mm	10 mm	3.2 mm	DIN 439B, ISO 4035	1	93031A114	0000
		M8 × 1 mm	13 mm	4 mm	DIN 439B, ISO 4035	1	93031A133	0000
		M8 × 1.25 mm	13 mm	4 mm	DIN 439B, ISO 4035	1	93031A115	0000
		M10 × 1 mm	17 mm	5 mm	DIN 439B, ISO 4035	1	93031A134	0000
		M10 × 1.25 mm	17 mm	5 mm	DIN 439B	1	93031A211	0000
		M10 × 1.5 mm	17 mm	5 mm	DIN 439B, ISO 4035	1	93031A116	0000
		M12 × 1.25 mm	19 mm	6 mm	DIN 439B	1	93031A212	0000


		M12 × 1.5 mm	19 mm	6 mm	DIN 439B, ISO 4035	1	93031A135	0000
		M12 × 1.75 mm	19 mm	6 mm	DIN 439B, ISO 4035	1	93031A117	0000
		M14 × 1.5 mm	22 mm	7 mm	DIN 439B, ISO 4035	1	93031A136	00000
		M16 × 1.5 mm	24 mm	8 mm	DIN 439B, ISO 4035	1	93031A137	00000
		M16 × 2 mm	24 mm	8 mm	DIN 439B, ISO 4035	1	93031A119	00000
		M18 × 1.5 mm	27 mm	9 mm	DIN 439B, ISO 4035	1	93031A138	00000
		M20 × 1.5 mm	30 mm	10 mm	DIN 439B, ISO 4035	1	93031A139	00000
		M22 × 1.5 mm	32 mm	11 mm	DIN 439B, ISO 4035	1	93031A141	00000
		M24 × 2 mm	36 mm	12 mm	DIN 439B, ISO 4035	1	93031A213	00000
		M30 × 1.5 mm	46 mm	15 mm	DIN 439B, ISO 4035	1	93031A146	00000

Corrosion-Resistant Stainless Steel with Material Certificate

18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.

	Wd.	Ht.	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1 1/4"-7	1 7/8"	23/32"	ASME B18.2.2	1	94450A537	000000
	M3 × 0.35 mm	5.5 mm	1.8 mm	DIN 439B	1	94450A564	0000
	M5 × 0.8 mm	8 mm	2.7 mm	DIN 439B	1	94450A548	0000
	M27 × 2 mm	41 mm	13.5 mm	DIN 439B	1	94450A578	00000


	Super-Corrosion-Resistant 316 Stainless Steel



			M5 × 0.5 mm	8 mm	2.7 mm	DIN 439B, ISO 4035	1	93031A131	0000

Brass

Brass—Conductive and nonmagnetic, brass nuts are commonly used to secure electrical equipment, such as circuit board assemblies and mounting brackets, inside enclosures. They're also softer than most metals, so they won't damage other fastening components.

	Wd.	Ht.	Specs. Met		Each
Brass



	6-32	5/16"	3/32"	—	92117A550	00000
	8-32	11/32"	7/64"	—	92117A570	0000
	10-32	3/8"	7/64"	—	92117A610	0000
	5/8"-18	15/16"	3/8"	—	92117A780	00000
	3/4"-10	1 1/8"	27/64"	—	92117A790	00000
	1"-12	1 1/2"	35/64"	—	92117A860	00000
	1"-14	1 1/2"	35/64"	—	92117A870	00000
	1 1/2"-12	2 1/4"	27/32"	—	92117A940	00000
	M5 × 0.8 mm	8 mm	2.7 mm	DIN 439B, ISO 4035	92117A130	0000
	M6 × 1 mm	10 mm	3.2 mm	DIN 439B, ISO 4035	92117A140	0000


	M14 × 1.5 mm	22 mm	7 mm	DIN 439B, ISO 4035	92117A360	00000
	M16 × 1.5 mm	24 mm	8 mm	DIN 439B, ISO 4035	92117A370	00000

Low-Strength Steel with Material Certificate

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	Specs. Met	Pkg. Qty.		Pkg.
Black-Oxide Steel



	5/16"-24	1/2"	3/16"	SAE Grade 2	ASTM A108	1	90519A865	00000

Brass with Material Certificate

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

	Wd.	Ht.	Specs. Met		Each
Brass



	1 1/4"-7	1 7/8"	23/32"	—	92117A910	000000
	M18 × 1.5 mm	27 mm	9 mm	DIN 439B, ISO 4035	92117A380	00000

Medium-Strength Steel with Material Certificate

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.

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

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



	M5 × 0.5 mm	8	2.7	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A831	00000
	M27 × 1.5 mm	41	13.5	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A844	00000
	M27 × 2 mm	41	13.5	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A843	00000
	M30 × 3.5 mm	46	15	ISO Class 04	ASTM A108, DIN 439B, ISO 4035	1	90519A826	00000