DIN 1587 Nuts | McMaster-Carr

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Thread Size

System of Measurement

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Thread Depth

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Cap Nut Profile

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Thread Spacing

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Fastener Strength Grade/Class

ISO Class 10

Fastener Strength Rating

RoHS

Export Control Classification Number (ECCN)

EAR99

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DFARS Specialty Metals

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Threadlocker Type

Nylon Patch

Maximum Threadlocker Temperature

250° F

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46 Products

Performance

Corrosion Resistant

Won't rust in wet and outdoor environments

30 products

Vibration Resistant

Grip tighter than other nuts to resist loosening due to vibration

5 products

Performance

High Strength

Withstand heavy loads and high stress without cracking

4 products

Locking Type

Threadlocker

A nylon patch on the threads resists loosening from mild vibration

5 products

Cap Nuts

Conceal and protect protruding screw threads while fastening parts together. These nuts help prevent damage to surrounding materials and reduce injuries. Also known as acorn nuts, they have a smooth, rounded head that creates a finished look.

Stainless Steel

Image of Product. Front orientation. Cap Nuts. Cap Nuts.

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—Our most corrosion-resistant cap nuts, these hold up in just about any environment. They won't degrade from exposure to weather, salt water, and most chemicals.

								Pkg.
	Thread Size	Thread Dp., mm	Wd., mm	Ht., mm	Specs. Met	Pkg. Qty.		1-9	10-49	50-Up
18-8 Stainless Steel



		M3 × 0.5 mm	3.8	5.5	6	DIN 1587	10	94000A330	00000	00000	00000
		M4 × 0.7 mm	5.7	7	8	DIN 1587	25	94000A035	0000	0000	0000
		M5 × 0.8 mm	4.5	8	10	DIN 1587	25	94000A037	0000	0000	0000
		M6 × 1 mm	7.7	10	12	DIN 1587	20	94000A038	0000	0000	0000
		M8 × 1.25 mm	10.7	13	15	DIN 1587	10	94000A039	0000	0000	0000
		M10 × 1.5 mm	12.7	17	18	DIN 1587	5	94000A040	0000	0000	0000
		M12 × 1.75 mm	15.7	19	22	DIN 1587	5	94000A041	0000	0000	0000
		M14 × 2 mm	17.7	22	25	DIN 1587	1	94000A431	0000	0000	0000
		M16 × 2 mm	20.6	24	28	DIN 1587	1	94000A461	0000	0000	0000
		M18 × 2.5 mm	24.6	27	32	DIN 1587	1	94000A490	0000	0000	0000


		M20 × 2.5 mm	25.6	30	34	DIN 1587	1	94000A510	0000	0000	0000
		M22 × 2.5 mm	28.6	34	39	DIN 1587	1	94000A101	0000	0000	0000
		M24 × 3 mm	30.5	36	42	DIN 1587	1	94000A102	0000	0000	0000


		Super-Corrosion-Resistant 316 Stainless Steel



				M3 × 0.5 mm	3.8	5.5	6	DIN 1587	25	95514A101	0000	0000	0000
				M4 × 0.7 mm	5.5	7	8	DIN 1587	25	95514A102	0000	0000	0000
				M5 × 0.8 mm	4.5	8	10	DIN 1587	25	95514A103	0000	0000	0000
				M6 × 1 mm	8	10	12	DIN 1587	25	95514A104	00000	0000	0000
				M8 × 1.25 mm	11	13	15	DIN 1587	10	95514A105	0000	0000	0000
				M10 × 1.5 mm	13	17	18	DIN 1587	10	95514A106	00000	00000	00000
				M12 × 1.75 mm	16	19	22	DIN 1587	5	95514A107	00000	00000	00000
				M14 × 2 mm	18	22	25	DIN 1587	1	95514A108	0000	0000	0000
				M16 × 2 mm	21	24	28	DIN 1587	1	95514A109	0000	0000	0000
				M20 × 2.5 mm	26	30	34	DIN 1587	1	95514A111	00000	00000	0000


				M22 × 2.5 mm	29	34	39	DIN 1587	1	95514A112	00000	00000	00000
				M24 × 3 mm	31	36	42	DIN 1587	1	95514A113	00000	00000	00000

Low-Strength Steel

Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength steel 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.

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

Chrome-Plated Steel—The brightest, shiniest finish we offer, this plating has a mirror-like appearance that is often used in decorative applications. It resists salt water and chemicals better than zinc plating and is less likely to wear off.

								Pkg.
	Thread Size	Thread Dp., mm	Wd., mm	Ht., mm	Specs. Met	Pkg. Qty.		1-9	10-49	50-Up
Zinc-Plated Steel



		M4 × 0.7 mm	5.3	7	8	DIN 1587	50	91880A035	000000	000000	00000
		M5 × 0.8 mm	3.7	8	10	DIN 1587	50	91880A037	00000	00000	0000
		M6 × 1 mm	7.7	10	12	DIN 1587	50	91880A045	00000	00000	00000
		M8 × 1.25 mm	10.7	13	15	DIN 1587	25	91880A050	00000	0000	0000
		M10 × 1.5 mm	12.7	17	18	DIN 1587	10	91880A056	0000	0000	0000
		M12 × 1.75 mm	15.7	19	22	DIN 1587	10	91880A060	00000	00000	0000


		Chrome-Plated Steel



				M4 × 0.7 mm	3.9	7	8	DIN 1587	5	91982A200	00000	0000	0000
				M5 × 0.8 mm	5.6	8	10	DIN 1587	5	91982A225	00000	0000	0000
				M6 × 1 mm	5.7	10	12	DIN 1587	5	91982A250	00000	00000	0000
				M8 × 1.25 mm	8.2	13	15	DIN 1587	1	91982A275	0000	0000	0000
				M10 × 1.5 mm	9.7	17	18	DIN 1587	1	91982A300	0000	0000	0000
				M12 × 1.75 mm	12.2	19	22	DIN 1587	1	91982A325	0000	0000	0000

High-Strength Steel

Rated Grade 8 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.

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

									Pkg.
	Thread Size	Thread Dp., mm	Wd., mm	Ht., mm	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		1-9	10-49	50-Up
Zinc-Plated Steel



		M6 × 1 mm	5.7	10	12	ISO Class 10	DIN 1587	5	99164A101	000000	000000	00000
		M8 × 1.25 mm	8.2	13	15	ISO Class 10	DIN 1587	5	99164A102	00000	00000	00000
		M10 × 1.5 mm	9.7	17	18	ISO Class 10	DIN 1587	1	99164A103	0000	0000	0000
		M12 × 1.75 mm	12.2	19	22	ISO Class 10	DIN 1587	1	99164A104	00000	0000	0000

Cap Nuts with Threadlocker

These nuts not only conceal and protect protruding screw threads, they also resist loosening from mild vibration. They have a nylon patch bonded to their threads that grips screws for a tighter hold than standard cap nuts. They’re reusable a handful of times, but the patch’s holding power decreases with each use. Also known as acorn nuts, they have a smooth, rounded head that creates a finished look.

Stainless Steel

Image of Product. Front orientation. Contains Annotated, Border. Cap Nuts. Cap Nuts with Threadlocker.

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.

	Thread Dp., mm	Wd., mm	Ht., mm	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	M5 × 0.8 mm	5.6	8	10	DIN 1587	5	90428A110	000000
	M6 × 1 mm	5.7	10	12	DIN 1587	5	90428A120	00000
	M8 × 1.25 mm	8.2	13	15	DIN 1587	5	90428A130	00000
	M10 × 1.5 mm	9.7	17	18	DIN 1587	1	90428A140	00000
	M12 × 1.75 mm	12.2	19	22	DIN 1587	1	90428A150	00000