Class 10 Steel Hex Nuts | McMaster-Carr

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ISO Class 10

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Corrosion-Resistant Coated

Dyed

Zinc Flake Coated

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Zinc Yellow-Chromate Plated

Material

Steel

System of Measurement

Thread Size

Thread Pitch

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Fastener Strength Rating

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Thread Spacing

Thread Direction

Width

Thread Type

Performance

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Export Control Classification Number (ECCN)

EAR99

Certificate Type

Material Certificate with Traceable Lot Number

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129 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.

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.

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.

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.

Black Corrosion-Resistant-Coated Steel—Combines a finished appearance with the rust resistance of stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.

Zinc-Flake-Coated Steel—The most durable zinc coating, zinc flake is a multilayer finish that resists wear for long-term rust protection. Similar to zinc yellow-chromate, it won't hold up to harsh chemicals like stainless steel can.

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

Blue Dyed Steel—These metric-sized nuts have a distinctive blue color, so you can easily tell them apart from inch nuts.

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



		M3 × 0.5 mm	5.5	2.4	ISO Class 10	DIN 934	100	000000000	00000


		M4 × 0.7 mm	7	3.2	ISO Class 10	DIN 934	100	000000000	0000
		M5 × 0.8 mm	8	4	ISO Class 10	DIN 934	100	000000000	0000
		M6 × 1 mm	10	5.2	ISO Class 10	DIN 934	100	000000000	00000
		M8 × 1 mm	13	6.5	ISO Class 10	DIN 934	25	00000000	00000
		M8 × 1.25 mm	13	6.5	ISO Class 10	DIN 934	50	000000000	0000
		M10 × 1 mm	17	8	ISO Class 10	DIN 934	10	00000000	0000
		M10 × 1.25 mm	17	8	ISO Class 10	DIN 934	10	00000000	0000
		M10 × 1.5 mm	17	8	ISO Class 10	DIN 934	25	000000000	0000
		M12 × 1 mm	19	10	ISO Class 10	DIN 934	5	00000000	0000
		M12 × 1.25 mm	19	10	ISO Class 10	DIN 934	10	00000000	0000


		M12 × 1.5 mm	19	10	ISO Class 10	DIN 934	10	00000000	0000
		M12 × 1.75 mm	19	10	ISO Class 10	DIN 934	25	000000000	00000
		M14 × 1.5 mm	22	11	ISO Class 10	DIN 934	10	00000000	00000
		M14 × 2 mm	22	11	ISO Class 10	DIN 934	10	000000000	0000
		M16 × 1.5 mm	24	13	ISO Class 10	DIN 934	5	00000000	0000
		M16 × 2 mm	24	13	ISO Class 10	DIN 934	10	000000000	0000
		M18 × 1.5 mm	27	15	ISO Class 10	DIN 934	5	00000000	00000
		M18 × 2.5 mm	27	15	ISO Class 10	DIN 934	5	000000000	00000
		M20 × 1.5 mm	30	16	ISO Class 10	DIN 934	5	0000000	0000
		M20 × 2 mm	30	16	ISO Class 10	DIN 934	1	00000000	0000


		M20 × 2.5 mm	30	16	ISO Class 10	DIN 934	5	000000000	0000
		M22 × 1.5 mm	32	18	ISO Class 10	DIN 934	1	00000000	0000
		M22 × 2.5 mm	32	18	ISO Class 10	DIN 934	1	000000000	0000
		M24 × 1.5 mm	36	19	ISO Class 10	DIN 934	1	00000000	0000
		M24 × 2 mm	36	19	ISO Class 10	DIN 934	1	00000000	0000
		M24 × 3 mm	36	19	ISO Class 10	DIN 934	1	000000000	0000
		M27 × 2 mm	41	22	ISO Class 10	DIN 934	1	00000000	0000
		M27 × 3 mm	41	22	ISO Class 10	DIN 934	1	000000000	0000
		M30 × 1.5 mm	46	24	ISO Class 10	DIN 934	1	00000000	0000
		M30 × 2 mm	49	24	ISO Class 10	DIN 934	1	00000000	0000


		M30 × 3.5 mm	46	24	ISO Class 10	DIN 934	1	000000000	0000
		M42 × 4.5 mm	65	34	ISO Class 10	DIN 934	1	000000000	00000


		Zinc-Yellow-Chromate-Plated Steel



				M3 × 0.5 mm	5.5	2.4	ISO Class 10	DIN 934	25	000000000	00000


				M4 × 0.7 mm	7	3.2	ISO Class 10	DIN 934	50	000000000	00000
				M5 × 0.8 mm	8	4	ISO Class 10	DIN 934	100	000000000	00000
				M6 × 1 mm	10	5	ISO Class 10	DIN 934	100	000000000	00000
				M8 × 1 mm	13	6.5	ISO Class 10	DIN 934	10	000000000	0000
				M8 × 1.25 mm	13	6.5	ISO Class 10	DIN 934	100	000000000	00000
				M10 × 1 mm	17	8	ISO Class 10	DIN 934	5	000000000	0000
				M10 × 1.25 mm	17	8	ISO Class 10	DIN 934	5	000000000	0000
				M10 × 1.5 mm	17	8	ISO Class 10	DIN 934	50	000000000	00000
				M12 × 1.25 mm	19	10	ISO Class 10	DIN 934	5	000000000	0000
				M12 × 1.5 mm	19	10	ISO Class 10	DIN 934	5	000000000	00000


M12 × 1.75 mm	19			10	ISO Class 10	DIN 934	25	000000000	00000
M14 × 1.5 mm	22			11	ISO Class 10	DIN 934	5	000000000	00000
M14 × 2 mm	22			11	ISO Class 10	DIN 934	10	000000000	00000
M16 × 1.5 mm	24			13	ISO Class 10	DIN 934	1	000000000	0000
M16 × 2 mm	24			13	ISO Class 10	DIN 934	10	000000000	00000
M18 × 1.5 mm	27			15	ISO Class 10	DIN 934	1	000000000	0000
M18 × 2.5 mm	27			15	ISO Class 10	DIN 934	5	000000000	00000
M20 × 1.5 mm	30			16	ISO Class 10	DIN 934	1	000000000	0000
M20 × 2.5 mm	30			16	ISO Class 10	DIN 934	5	000000000	00000
M22 × 1.5 mm	32			18	ISO Class 10	DIN 934	1	000000000	0000


M22 × 2.5 mm	32			18	ISO Class 10	DIN 934	1	000000000	0000
M24 × 1.5 mm	36			19	ISO Class 10	DIN 934	1	000000000	00000
M24 × 2 mm	36			19	ISO Class 10	DIN 934	1	000000000	00000
M24 × 3 mm	36			19	ISO Class 10	DIN 934	1	000000000	0000
M30 × 1.5 mm	46			24	ISO Class 10	DIN 934	1	000000000	00000
M30 × 3.5 mm	46			24	ISO Class 10	DIN 934	1	000000000	0000
M36 × 4 mm	55			29	ISO Class 10	DIN 934	1	000000000	00000


Black-Oxide Steel



				M4 × 0.7 mm	7	3.2	ISO Class 10	DIN 934	100	000000000	0000


				M5 × 0.8 mm	8	4	ISO Class 10	DIN 934	50	000000000	0000
				M6 × 1 mm	10	5	ISO Class 10	DIN 934	50	000000000	0000
				M8 × 1.25 mm	13	6.5	ISO Class 10	DIN 934	25	000000000	0000
				M10 × 1.5 mm	17	8	ISO Class 10	DIN 934	10	000000000	0000
				M12 × 1.75 mm	19	10	ISO Class 10	DIN 934	10	000000000	0000
				M14 × 2 mm	22	11	ISO Class 10	DIN 934	5	000000000	00000
				M16 × 2 mm	24	13	ISO Class 10	DIN 934	5	000000000	00000
				M20 × 2.5 mm	30	16	ISO Class 10	DIN 934	1	000000000	0000
				M22 × 2.5 mm	32	18	ISO Class 10	DIN 934	1	000000000	0000
				M24 × 3 mm	36	19	ISO Class 10	DIN 934	1	000000000	0000


				M30 × 3.5 mm	46	24	ISO Class 10	DIN 934	1	000000000	00000


				Black Corrosion-Resistant-Coated Steel



		M6 × 1 mm				10	5	ISO Class 10	DIN 934	10	000000000	00000


		M8 × 1.25 mm	13			6.5	ISO Class 10	DIN 934	10	000000000	00000
		M10 × 1.5 mm	17			8	ISO Class 10	DIN 934	10	000000000	00000
		M12 × 1.75 mm	19			10	ISO Class 10	DIN 934	5	000000000	0000


		Zinc-Flake-Coated Steel



						M6 × 1 mm	10	5	ISO Class 10	DIN 934	100	000000000	00000


						M8 × 1.25 mm	13	6.5	ISO Class 10	DIN 934	50	000000000	00000
						M10 × 1.5 mm	17	8	ISO Class 10	DIN 934	25	000000000	00000
						M12 × 1.75 mm	19	10	ISO Class 10	DIN 934	25	000000000	00000


						Steel



								M3 × 0.5 mm	5.5	2.4	ISO Class 10	DIN 934	25	000000000	00000


								M4 × 0.7 mm	7	3.2	ISO Class 10	DIN 934	100	000000000	0000
								M5 × 0.8 mm	8	4	ISO Class 10	DIN 934	100	000000000	0000
								M6 × 1 mm	10	5	ISO Class 10	DIN 934	100	000000000	0000
								M8 × 1 mm	13	6.5	ISO Class 10	DIN 934	50	00000000	00000
								M8 × 1.25 mm	13	6.5	ISO Class 10	DIN 934	100	000000000	00000
								M10 × 1 mm	17	8	ISO Class 10	DIN 934	10	00000000	0000
								M10 × 1.25 mm	17	8	ISO Class 10	DIN 934	10	00000000	0000
								M10 × 1.5 mm	17	8	ISO Class 10	DIN 934	50	000000000	00000
								M12 × 1 mm	19	10	ISO Class 10	DIN 934	10	00000000	00000
								M12 × 1.25 mm	19	10	ISO Class 10	DIN 934	25	00000000	00000


M12 × 1.5 mm								19	10	ISO Class 10	DIN 934	10	00000000	0000
M12 × 1.75 mm	19							10	ISO Class 10	DIN 934	25	000000000	00000
M14 × 1.5 mm	22							11	ISO Class 10	DIN 934	10	00000000	0000
M14 × 2 mm	22							11	ISO Class 10	DIN 934	25	000000000	00000
M16 × 1.5 mm	24							13	ISO Class 10	DIN 934	10	00000000	00000
M16 × 2 mm	24							13	ISO Class 10	DIN 934	10	000000000	00000
M18 × 1.5 mm	27							15	ISO Class 10	DIN 934	5	00000000	0000
M18 × 2.5 mm	27							15	ISO Class 10	DIN 934	10	000000000	00000
M20 × 1.5 mm	30							16	ISO Class 10	DIN 934	5	0000000	0000
M20 × 2 mm	30							16	ISO Class 10	DIN 934	5	00000000	00000


M20 × 2.5 mm	30							16	ISO Class 10	DIN 934	10	000000000	00000
M22 × 1.5 mm	32							18	ISO Class 10	DIN 934	1	00000000	0000
M22 × 2.5 mm	32							18	ISO Class 10	DIN 934	5	000000000	00000
M24 × 1.5 mm	36							19	ISO Class 10	DIN 934	1	00000000	0000
M24 × 2 mm	36							19	ISO Class 10	DIN 934	1	00000000	0000
M24 × 3 mm	36							19	ISO Class 10	DIN 934	5	000000000	00000
M27 × 2 mm	41							22	ISO Class 10	DIN 934	1	00000000	0000
M27 × 3 mm	41							22	ISO Class 10	DIN 934	5	000000000	00000
M30 × 1.5 mm	46							24	ISO Class 10	DIN 934	1	00000000	0000
M30 × 2 mm	49							24	ISO Class 10	DIN 934	1	00000000	0000


M30 × 3.5 mm	46			24	ISO Class 10			DIN 934	1	000000000	0000
M36 × 2 mm	55			29	ISO Class 10			DIN 934	1	00000000	00000
M36 × 4 mm	55			29	ISO Class 10			DIN 934	1	000000000	0000
M42 × 4.5 mm	65			34	ISO Class 10			DIN 934	1	000000000	00000
M48 × 5 mm	75			38	ISO Class 10			DIN 934	1	000000000	00000


Blue Dyed Steel



		M6 × 1 mm		10	5			ISO Class 10	DIN 934	50	000000000	0000


		M8 × 1.25 mm	13	6.5	ISO Class 10			DIN 934	50	000000000	00000
		M10 × 1.5 mm	17	8	ISO Class 10			DIN 934	25	000000000	00000
		M12 × 1.75 mm	19	10	ISO Class 10			DIN 934	10	000000000	0000
		M14 × 2 mm	22	11	ISO Class 10			DIN 934	10	000000000	00000
		M16 × 2 mm	24	13	ISO Class 10			DIN 934	10	000000000	00000
		M18 × 2.5 mm	27	15	ISO Class 10			DIN 934	1	000000000	0000
		M20 × 2.5 mm	30	16	ISO Class 10			DIN 934	1	000000000	0000
		M24 × 3 mm	36	19	ISO Class 10			DIN 934	1	000000000	0000
		M30 × 3.5 mm	46	24	ISO Class 10			DIN 934	1	000000000	0000
		M36 × 4 mm	55	29	ISO Class 10	DIN 934		1	000000000	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.

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

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.
Zinc-Plated Steel



	M36 × 4 mm	55	29	ISO Class 10	DIN 934	1	000000000	000000