Class 5 Steel Square Nuts

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42 Products

Low-Strength Steel Square Nuts

Large flat sides make these nuts easy to grip with a wrench and keep them from rotating in channels and square holes. About half the strength of medium-strength steel square nuts, use them in light duty fastening applications, such as securing access panels.

Black-Zinc-Plated Steel—Black-zinc-plated steel square nuts resist corrosion in wet environments and have a black finish that blends in with dark surfaces.

Steel—Steel square nuts are best for dry environments, since moisture will cause them to rust.

Zinc-Plated Steel—Zinc-plated steel square nuts resist corrosion in wet environments.

	Wd., mm	Ht., mm	Specs. Met	Pkg. Qty.		Pkg.
Steel—ISO Class 5



	M4 × 0.7 mm	7	3	DIN 557	50	96887A111	00000
	M5 × 0.8 mm	8	4	DIN 557	50	96887A112	00000
	M6 × 1 mm	10	5	DIN 557	25	96887A113	0000
	M8 × 1.25 mm	13	6.5	DIN 557	25	96887A114	0000
	M10 × 1.5 mm	17	8	DIN 557	10	96887A115	0000
	M12 × 1.75 mm	19	10	DIN 557	5	96887A116	0000


	Zinc-Plated Steel—ISO Class 5



			M4 × 0.7 mm	7	3.2	DIN 557	100	96887A329	00000
			M5 × 0.8 mm	8	4	DIN 557	100	96887A331	00000
			M6 × 1 mm	10	5	DIN 557	100	96887A319	00000
			M8 × 1.25 mm	13	6.5	DIN 557	25	96887A322	0000
			M10 × 1.5 mm	17	8	DIN 557	25	96887A325	00000
			M12 × 1.75 mm	19	10	DIN 557	10	96887A328	0000
			M16 × 2 mm	24	13	DIN 557	5	96887A332	00000
			M20 × 2.5 mm	30	16	DIN 557	5	96887A334	00000


			Black-Zinc-Plated Steel—ISO Class 5



					M4 × 0.7 mm	7	3	DIN 557	25	96887A118	0000
					M5 × 0.8 mm	8	4	DIN 557	25	96887A119	0000
					M6 × 1 mm	10	5	DIN 557	25	96887A121	0000
					M8 × 1.25 mm	13	6.5	DIN 557	10	96887A122	0000
					M10 × 1.5 mm	17	8	DIN 557	10	96887A123	00000
					M16 × 2 mm	24	13	DIN 557	1	96887A125	0000

Medium-Strength Steel Square Nuts

Large flat sides make these nuts easy to grip with a wrench and keep them from rotating in channels and square holes. Made from SAE Grade 5 steel, they're suitable for fastening most machinery and equipment.

Steel—Steel square nuts are best for dry environments, since moisture will cause them to rust.

Zinc-Plated Steel—Zinc-plated steel square nuts resist corrosion in wet environments.

	Wd.	Ht.	Pkg. Qty.		Pkg.
Steel—SAE Grade 5



	1/4"-20	7/16"	7/32"	100	98694A211	00000
	5/16"-18	9/16"	17/64"	50	98694A212	0000
	3/8"-16	5/8"	21/64"	25	98694A213	0000
	7/16"-14	3/4"	3/8"	10	98694A214	0000
	1/2"-13	13/16"	7/16"	10	98694A215	0000
	5/8"-11	1"	35/64"	5	98694A216	0000
	3/4"-10	1 1/8"	21/32"	5	98694A217	0000
	7/8"-9	1 5/16"	49/64"	1	98694A218	0000
	1"-8	1 1/2"	7/8"	1	98694A219	0000
	1 1/4"-7	1 7/8"	1 3/32"	1	98694A221	0000


	Zinc-Plated Steel—SAE Grade 5



			1/4"-20	7/16"	7/32"	100	98694A110	0000
			5/16"-18	9/16"	17/64"	100	98694A115	00000
			3/8"-16	5/8"	21/64"	50	98694A120	00000
			7/16"-14	3/4"	3/8"	25	98694A125	00000
			1/2"-13	13/16"	7/16"	25	98694A130	00000
			5/8"-11	1"	35/64"	10	98694A135	0000
			3/4"-10	1 1/8"	21/32"	10	98694A140	00000
			7/8"-9	1 5/16"	49/64"	5	98694A145	00000
			1"-8	1 1/2"	7/8"	1	98694A150	0000
			1 1/8"-7	1 11/16"	1"	1	98694A155	0000


			1 1/4"-7	1 7/8"	1 3/32"	1	98694A160	0000
			1 1/2"-6	2 1/4"	1 5/16"	1	98694A165	00000