Metric Class 8 Nuts | McMaster-Carr

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Finish

Zinc Yellow-Chromate Plated

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Class 6

Class 8

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Thread Size

Thread Pitch

Nut Type

Hex Nut Profile

Height

Width

Material

Thread Spacing

Thread Type

Thread Direction

Fastener Strength Rating

Thread Fit

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DFARS Specialty Metals

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EAR99

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76 Products

About Hex Nuts

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

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.

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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.

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

Zinc-Yellow-Chromate-Plated Steel—With a more durable finish than clear zinc plating, these nuts are suitable for most wet and outdoor environments. However, they won't hold up to the harsh chemicals that stainless steel can.

	Thread Size	Wd., mm	Ht., mm	Fastener Strength Grade/Class	Specs. Met	Certificate Type	Pkg. Qty.		Pkg.
Zinc-Plated Steel



		M2 × 0.4 mm	4	1.6	Class 8	DIN 934	—	100	90591A265	00000


		M2.5 × 0.45 mm	5	2	Class 8	DIN 934	—	100	90591A270	0000
		M3 × 0.5 mm	5.5	2.4	Class 8	DIN 934	—	100	90591A250	0000
		M3.5 × 0.6 mm	6	2.8	Class 8	DIN 934	Material Certificate	100	90591A100	0000
		M4 × 0.7 mm	7	3.2	Class 8	DIN 934	Material Certificate	100	90591A255	0000
		M5 × 0.8 mm	8	4	Class 8	DIN 934	Material Certificate	100	90591A260	0000
		M6 × 0.75 mm	10	5	Class 8	DIN 934	—	50	91415A210	00000
		M6 × 1 mm	10	5	Class 8	DIN 934	—	100	90591A151	0000
		M7 × 1 mm	11	5.5	Class 8	DIN 934	—	100	90591A154	0000
		M8 × 1 mm	13	6.5	Class 8	DIN 934	—	100	91415A105	00000
		M8 × 1.25 mm	13	6.5	Class 8	DIN 934	—	100	90591A161	0000


		M10 × 1 mm	17	8	Class 8	DIN 934	—	50	91415A215	00000
		M10 × 1.25 mm	17	8	Class 8	DIN 934	—	50	91415A225	00000
		M10 × 1.5 mm	17	8	Class 8	DIN 934	Material Certificate	100	90591A171	00000
		M12 × 1 mm	19	10	Class 8	DIN 934	—	10	91415A150	00000
		M12 × 1.25 mm	19	10	Class 8	DIN 934	Material Certificate	25	91415A235	00000
		M12 × 1.5 mm	19	10	Class 8	DIN 934	—	25	91415A125	00000
		M12 × 1.75 mm	19	10	Class 8	DIN 934	Material Certificate	50	90591A181	00000
		M14 × 1.5 mm	22	11	Class 8	DIN 934	—	25	91415A255	00000
		M14 × 2 mm	22	11	Class 8	DIN 934	—	25	90591A215	00000
		M16 × 1.5 mm	24	13	Class 8	DIN 934	—	20	91415A265	00000


		M16 × 2 mm	24	13	Class 8	DIN 934	Material Certificate	25	90591A220	00000
		M18 × 1.5 mm	27	15	Class 8	DIN 934	—	10	91415A270	00000
		M18 × 2.5 mm	27	15	Class 8	DIN 934	—	10	90591A225	0000
		M20 × 1.5 mm	30	16	Class 8	DIN 934	—	10	91415A275	00000
		M20 × 2 mm	30	16	Class 8	DIN 934	Material Certificate	1	91415A220	0000
		M20 × 2.5 mm	30	16	Class 8	DIN 934	Material Certificate	10	90591A230	0000
		M22 × 1.5 mm	32	18	Class 8	DIN 934	—	1	91415A280	0000
		M22 × 2 mm	32	18	Class 8	DIN 934	—	1	91415A230	0000
		M22 × 2.5 mm	32	18	Class 8	DIN 934	—	10	90591A127	00000
		M24 × 1.5 mm	36	19	Class 8	DIN 934	—	1	91415A285	0000


		M24 × 2 mm	36	19	Class 8	DIN 934	—	1	91415A290	0000
		M24 × 3 mm	36	19	Class 8	DIN 934	Material Certificate	10	90591A235	00000
		M27 × 2 mm	41	22	Class 8	DIN 934	—	1	91415A240	00000
		M27 × 3 mm	41	22	Class 8	DIN 934	—	1	90591A140	0000
		M30 × 2 mm	46	24	Class 8	DIN 934	—	1	91415A310	0000
		M30 × 3.5 mm	46	24	Class 8	DIN 934	—	1	90591A240	0000
		M33 × 3.5 mm	50	26	Class 8	DIN 934	—	1	90591A147	0000
		M36 × 3 mm	55	29	Class 8	DIN 934	—	1	91415A340	00000
		M36 × 4 mm	55	29	Class 8	DIN 934	—	1	90591A245	0000
		M39 × 4 mm	60	31	Class 8	DIN 934	—	1	90591A162	0000


		M42 × 4.5 mm	65	34	Class 8	DIN 934	—	1	90591A199	0000
		M48 × 5 mm	75	38	Class 8	DIN 934	—	1	90591A824	00000


		Zinc-Yellow-Chromate-Plated Steel



				M3 × 0.5 mm	5.5	2.4	Class 8	DIN 934	—	100	97700A110	0000


M4 × 0.7 mm	7			3.2	Class 8	DIN 934	—	100	97700A120	0000
M5 × 0.8 mm	8			4	Class 8	DIN 934	—	100	97700A130	0000
M6 × 0.75 mm	10			5	Class 8	DIN 934	—	50	94409A117	0000
M6 × 1 mm	10			5	Class 8	DIN 934	—	100	97700A140	0000
M7 × 1 mm	11			5.5	Class 8	DIN 934	—	100	97700A150	0000
M8 × 1 mm	13			6.5	Class 8	DIN 934	—	50	94409A118	0000
M8 × 1.25 mm	13			6.5	Class 8	DIN 934	Material Certificate	50	97700A160	0000
M10 × 1 mm	17			8	Class 8	DIN 934	—	25	94409A121	0000
M10 × 1.25 mm	17			8	Class 8	DIN 934	—	50	94409A119	00000
M10 × 1.5 mm	17			8	Class 8	DIN 934	Material Certificate	25	97700A170	0000


M12 × 1 mm	19			10	Class 8	DIN 934	—	10	94409A124	0000
M12 × 1.25 mm	19			10	Class 8	DIN 934	—	25	94409A123	00000
M12 × 1.5 mm	19			10	Class 8	DIN 934	—	25	94409A122	00000
M12 × 1.75 mm	19			10	Class 8	DIN 934	Material Certificate	25	97700A180	0000
M14 × 1.5 mm	22			11	Class 8	DIN 934	—	25	94409A125	00000
M14 × 2 mm	22			11	Class 8	DIN 934	—	10	97700A190	0000
M16 × 1.5 mm	24			13	Class 8	DIN 934	—	10	94409A126	0000
M16 × 2 mm	24			13	Class 8	DIN 934	—	10	97700A210	0000
M18 × 1.5 mm	27			15	Class 8	DIN 934	Material Certificate	5	94409A111	0000
M18 × 2.5 mm	27			15	Class 8	DIN 934	—	5	97700A220	0000


M20 × 1.5 mm	30			16	Class 8	DIN 934	—	5	94409A112	0000
M20 × 2.5 mm	30			16	Class 8	DIN 934	Material Certificate	5	97700A230	0000
M22 × 1.5 mm	32			18	Class 8	DIN 934	—	1	94409A127	0000
M22 × 2.5 mm	32			18	Class 8	DIN 934	—	5	97700A240	0000
M24 × 1.5 mm	36			19	Class 8	DIN 934	—	1	94409A129	0000
M24 × 2 mm	36			19	Class 8	DIN 934	—	1	94409A128	0000
M24 × 3 mm	36			19	Class 8	DIN 934	—	5	97700A250	0000
M27 × 3 mm	41			22	Class 8	DIN 934	—	1	97700A260	0000
M30 × 3.5 mm	46			24	Class 8	DIN 934	—	1	97700A270	0000
M36 × 4 mm	55			29	Class 8	DIN 934	—	1	97700A290	00000


M48 × 5 mm	75			38	Class 8	DIN 934	—	1	97700A340	00000

Hex Nut Assortments

With a range of sizes on hand, you can use these assortments to fasten a variety of machinery and equipment.

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

	No. of Pieces	Specs. Met	Container Type		Each
Zinc-Plated Steel Class 6, Class 8



	M3 to M20	720	DIN 934	Plastic Box	98188A912	0000000