DIN 6923 Nuts | McMaster-Carr

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Specifications Met

Thread Size

System of Measurement

Nut Type

Thread Pitch

Material

Finish

Zinc Yellow-Chromate Plated

Height

Fastener Strength Grade/Class

Locking Type

Width

Flange Diameter

Hex Nut Profile

Flange Thickness

Thread Spacing

Performance

Thread Type

Fastener Strength Rating

Thread Direction

Drive Style

REACH

Thread Fit

RoHS

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Color

142 Products

Locking Type

Serrations

Serrations on the flange bite into material for mild vibration resistance

63 products

Application

General Purpose

Nuts have a plain flange for a wide variety of fastening applications

79 products

Performance

Vibration Resistant

Grip tighter than other nuts to resist loosening due to vibration

63 products

High Strength

Withstand heavy loads and high stress without cracking

55 products

Serrated Flange Nuts

Serrations bite into material for mild vibration resistance while the flange eliminates the need for a separate washer. These nuts are ideal for securing screws in oversized or irregularly shaped holes since the flange covers a larger area than standard nuts. You can use them again and again without sacrificing strength. However, the serrations may mar the surface of your material. Also known as collar nuts.

Medium-Strength Steel

Image of Product. Bottom orientation. Flange Nuts. Serrated Flange Nuts.

Rated Grade 5, Grade F, or Class 8, these 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.

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

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

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


		M3 × 0.5 mm	5.5	4	8	0.7	ISO Class 8	DIN 6923, ISO 4161	100	96194A206	00000
		M4 × 0.7 mm	7	4.6	10	0.4	ISO Class 8	DIN 6923	100	96194A201	0000
		M5 × 0.8 mm	8	5	11.8	1	ISO Class 8	DIN 6923	100	96194A202	0000
		M6 × 1 mm	10	6	14.2	1.1	ISO Class 8	DIN 6923, ISO 4161	100	96194A101	0000
		M8 × 1 mm	13	8	17.9	1.2	ISO Class 8	DIN 6923	100	96194A107	00000
		M8 × 1.25 mm	13	8	17.9	1.2	ISO Class 8	DIN 6923, ISO 4161	100	96194A102	00000
		M10 × 1.25 mm	15	10	21.8	1.5	ISO Class 8	DIN 6923	50	96194A203	00000
		M10 × 1.5 mm	15	10	21.8	1.5	ISO Class 8	DIN 6923	50	96194A103	00000
		M12 × 1.75 mm	18	12	26	1.8	ISO Class 8	DIN 6923	25	96194A104	00000
		M14 × 2 mm	21	14	29.9	2.1	ISO Class 8	DIN 6923	25	96194A112	00000
		M16 × 2 mm	24	16	34.5	2.4	ISO Class 8	DIN 6923, ISO 4161	10	96194A204	00000
		M20 × 2.5 mm	30	20	42.8	3	ISO Class 8	DIN 6923, ISO 4161	1	96194A205	0000

		Zinc-Yellow-Chromate-Plated Steel


				M4 × 0.7 mm	7	4.2	10.5	0.9	ISO Class 8	DIN 6923, ISO 4161	50	96194A110	00000
				M5 × 0.8 mm	8	5	11.8	1	ISO Class 8	DIN 6923, ISO 4161	50	96194A120	00000
				M6 × 1 mm	10	6	14.2	1.1	ISO Class 8	DIN 6923, ISO 4161	100	96194A130	00000
				M8 × 1.25 mm	13	8	17.9	1.2	ISO Class 8	DIN 6923, ISO 4161	50	96194A140	00000
				M10 × 1.25 mm	15	10	21.8	1.5	ISO Class 8	DIN 6923	50	96194A190	00000
				M10 × 1.5 mm	15	10	21.8	1.5	ISO Class 8	DIN 6923, ISO 4161	25	96194A150	00000
				M12 × 1.75 mm	18	12	26	1.8	ISO Class 8	DIN 6923, ISO 4161	10	96194A160	00000
				M14 × 2 mm	21	14	29.9	2.1	ISO Class 8	DIN 6923	25	96194A210	00000
				M16 × 2 mm	24	16	34.5	2.4	ISO Class 8	DIN 6923, ISO 4161	1	96194A170	0000

				Black-Oxide Steel


						M4 × 0.7 mm	7	4.6	10	0.4	ISO Class 8	DIN 6923	100	94920A110	0000
						M5 × 0.8 mm	8	5	11.8	1	ISO Class 8	DIN 6923	100	94920A120	0000
						M6 × 1 mm	10	6	14.2	1.1	ISO Class 8	DIN 6923	100	94920A130	0000
						M8 × 1 mm	13	8	17.9	1.2	ISO Class 8	DIN 6923	100	94920A140	00000
						M8 × 1.25 mm	13	8	17.9	1.2	ISO Class 8	DIN 6923	100	94920A150	00000
						M10 × 1.25 mm	15	10	21.8	1.5	ISO Class 8	DIN 6923	50	94920A160	00000
						M10 × 1.5 mm	15	10	21.8	1.5	ISO Class 8	DIN 6923	50	94920A170	00000
						M12 × 1.75 mm	18	12	26	1.8	ISO Class 8	DIN 6923	25	94920A180	00000

						Steel


								M4 × 0.7 mm	7	4.6	10	0.4	ISO Class 8	DIN 6923	100	94920A105	0000
								M8 × 1 mm	13	8	17.9	1.2	ISO Class 8	DIN 6923	100	94920A106	00000
								M10 × 1.25 mm	15	10	21.8	1.5	ISO Class 8	DIN 6923	50	94920A107	0000
								M12 × 1.75 mm	18	12	26	1.8	ISO Class 8	DIN 6923, ISO 4161	25	94920A101	00000
								M14 × 2 mm	21	14	29.9	2.1	ISO Class 8	DIN 6923	25	94920A108	00000
								M16 × 2 mm	24	16	34.5	2.4	ISO Class 8	DIN 6923	10	94920A109	0000

High-Strength Steel

Rated Grade 8, Grade G, or Class 10, these are about 25% stronger than medium-strength steel nuts. They are commonly used to fasten components in valves, pumps, and motors. 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.

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

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


		M5 × 0.8 mm	8	5	11.8	1	ISO Class 10	DIN 6923	25	96595A106	00000
		M6 × 1 mm	10	6	14.2	1.1	ISO Class 10	DIN 6923	50	96595A101	00000
		M8 × 1.25 mm	13	8	17.9	1.2	ISO Class 10	DIN 6923	50	96595A102	00000
		M10 × 1.5 mm	15	10	21.8	1.5	ISO Class 10	DIN 6923	25	96595A103	00000
		M12 × 1.75 mm	18	12	26	1.8	ISO Class 10	DIN 6923	10	96595A104	0000
		M16 × 2 mm	24	16	34.5	2.4	ISO Class 10	DIN 6923	5	96595A105	00000
		M20 × 2.5 mm	30	20	42.8	3	ISO Class 10	DIN 6923	1	96595A107	0000

		Steel


				M5 × 0.8 mm	8	5	11.8	1	ISO Class 10	DIN 6923	25	90716A107	0000
				M6 × 1 mm	10	6	14.2	1.1	ISO Class 10	DIN 6923	50	90716A101	00000
				M8 × 1.25 mm	13	8	17.9	1.2	ISO Class 10	DIN 6923	50	90716A102	00000
				M10 × 1.5 mm	15	10	21.8	1.5	ISO Class 10	DIN 6923	25	90716A103	00000
				M12 × 1.75 mm	18	12	26	1.8	ISO Class 10	DIN 6923	10	90716A104	00000
				M16 × 2 mm	24	16	34.5	2.4	ISO Class 10	DIN 6923	5	90716A105	00000
				M20 × 2.5 mm	30	20	42.8	3	ISO Class 10	DIN 6923	1	90716A108	0000

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—Our most corrosion-resistant flange nuts, these hold up in just about any environment, including harsh weather, salt water, and most chemicals.

				Flange, mm
	Thread Size	Wd., mm	Ht., mm	Dia.	Thk.	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel


		M3 × 0.5 mm	5.5	4	8	0.7	DIN 6923	100	97400A135	00000
		M4 × 0.7 mm	7	4.65	10	1	DIN 6923	100	97400A380	00000
		M5 × 0.8 mm	8	5	11	1	DIN 6923	100	97400A858	00000
		M6 × 1 mm	10	6	14.2	1.18	DIN 6923	50	97400A101	0000
		M8 × 1.25 mm	13	8	17.9	1.3	DIN 6923	25	97400A102	0000
		M10 × 1.5 mm	15	10	21.8	1.8	DIN 6923	25	97400A103	0000
		M12 × 1.75 mm	18	12	26	2.19	DIN 6923	10	97400A104	0000

		Super-Corrosion-Resistant 316 Stainless Steel


				M3 × 0.5 mm	5.5	4	8	0.7	DIN 6923	25	91343A105	0000
				M4 × 0.7 mm	7	4.65	10	1	DIN 6923	25	91343A106	0000
				M5 × 0.8 mm	8	5	11.8	1	DIN 6923	25	91343A107	00000
				M6 × 1 mm	10	6	14.2	1.18	DIN 6923	25	92773A101	0000
				M8 × 1.25 mm	13	8	17.9	1.3	DIN 6923	10	92773A102	0000
				M10 × 1.5 mm	15	10	21.8	1.8	DIN 6923	10	92773A103	0000
				M12 × 1.75 mm	18	12	26	2.19	DIN 6923	5	92773A104	0000

Flange Nuts

No need for a separate washer—these nuts have a plain flange that distributes pressure evenly for a wide variety of fastening applications. They are ideal for securing screws in oversized or irregularly shaped holes since the flange covers a larger area than standard nuts. Also known as collar nuts.

Medium-Strength Steel

Image of Product. Front orientation. Flange Nuts. Flange Nuts.

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

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

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


		M3 × 0.5 mm	5.5	4	8	0.8	ISO Class 8	DIN 6923	50	90374A211	00000
		M4 × 0.7 mm	7	4.65	10	1.65	ISO Class 8	DIN 6923, ISO 4161	100	90374A110	0000
		M5 × 0.8 mm	8	5	11.8	2.8	ISO Class 8	DIN 6923, ISO 4161	100	90374A111	0000
		M6 × 1 mm	10	6	14.2	2.9	ISO Class 8	DIN 6923, ISO 4161	100	90374A112	0000
		M8 × 1 mm	13	8	17.9	3.5	ISO Class 8	DIN 6923, ISO 4161	50	90374A113	00000
		M8 × 1.25 mm	13	8	17.9	3.5	ISO Class 8	DIN 6923, ISO 4161	100	90374A114	00000
		M10 × 1.25 mm	15	10	21.8	4.5	ISO Class 8	DIN 6923, ISO 4161	50	90374A115	00000
		M10 × 1.5 mm	15	10	21.8	4.5	ISO Class 8	DIN 6923, ISO 4161	50	90374A116	00000
		M12 × 1.25 mm	18	12	26	5.3	ISO Class 8	DIN 6923, ISO 4161	25	90374A117	00000
		M12 × 1.5 mm	18	12	26	5.3	ISO Class 8	DIN 6923, ISO 4161	10	90374A118	0000
		M12 × 1.75 mm	18	12	26	5.3	ISO Class 8	DIN 6923, ISO 4161	25	90374A119	00000
		M14 × 2 mm	21	14	29.9	6.2	ISO Class 8	DIN 6923, ISO 4161	10	90374A120	00000
		M16 × 1.5 mm	24	16	34.5	7	ISO Class 8	DIN 6923, ISO 4161	1	90374A121	0000
		M16 × 2 mm	24	16	34.5	7	ISO Class 8	DIN 6923, ISO 4161	10	90374A122	00000
		M20 × 2.5 mm	30	20	42.8	9	ISO Class 8	DIN 6923, ISO 4161	5	90374A123	00000

		Steel


				M6 × 1 mm	10	6	14.2	1.1	ISO Class 8	DIN 6923	100	90374A212	0000
				M8 × 1.25 mm	13	8	17.9	1.2	ISO Class 8	DIN 6923	50	90374A213	0000
				M10 × 1.25 mm	15	10	21.8	1.5	ISO Class 8	DIN 6923	25	90374A215	0000
				M10 × 1.5 mm	15	10	21.8	1.5	ISO Class 8	DIN 6923	25	90374A216	0000
				M12 × 1.25 mm	18	12	26	1.8	ISO Class 8	DIN 6923	10	90374A218	0000
				M12 × 1.5 mm	18	12	26	1.8	ISO Class 8	DIN 6923	10	90374A219	0000
				M12 × 1.75 mm	18	12	26	1.8	ISO Class 8	DIN 6923	25	90374A217	0000
				M16 × 1.5 mm	24	16	34.5	2.4	ISO Class 8	DIN 6923	5	90374A221	0000
				M16 × 2 mm	24	16	34.5	2.4	ISO Class 8	DIN 6923	10	90374A214	0000

High-Strength Steel

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

Black Phosphate-Coated Steel—The dark coating creates both a finished appearance and a barrier against rust that's more durable than clear zinc plating.

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

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


		M5 × 0.8 mm	8	5	11.8	1	ISO Class 10	DIN 6923, ISO 4161	25	95003A201	000000
		M6 × 1 mm	10	6	14.2	1.1	ISO Class 10	DIN 6923, ISO 4161	100	95003A101	0000
		M8 × 1.25 mm	13	8	17.9	1.2	ISO Class 10	DIN 6923, ISO 4161	100	95003A102	00000
		M10 × 1.25 mm	15	10	21.8	1.5	ISO Class 10	DIN 6923, ISO 4161	10	95003A216	0000
		M10 × 1.5 mm	15	10	21.8	1.5	ISO Class 10	DIN 6923, ISO 4161	50	95003A103	00000
		M12 × 1.25 mm	18	12	26	1.8	ISO Class 10	DIN 6923, ISO 4161	5	95003A217	0000
		M12 × 1.5 mm	18	12	26	1.8	ISO Class 10	DIN 6923, ISO 4161	5	95003A218	0000
		M12 × 1.75 mm	18	12	26	1.8	ISO Class 10	DIN 6923, ISO 4161	25	95003A104	0000
		M14 × 1.5 mm	21	14	29.9	2.1	ISO Class 10	DIN 6923, ISO 4161	10	95003A214	00000
		M16 × 1.5 mm	24	16	34.5	2.4	ISO Class 10	DIN 6923, ISO 4161	1	95003A219	0000
		M16 × 2 mm	24	16	34.5	2.4	ISO Class 10	DIN 6923, ISO 4161	10	95003A105	00000
		M20 × 2.5 mm	30	20	42.8	3	ISO Class 10	DIN 6923, ISO 4161	1	95003A215	0000
		M24 × 3 mm	36	24	51	3.6	ISO Class 10	DIN 6923, ISO 4161	1	95003A204	00000

		Zinc-Yellow-Chromate-Plated Steel


				M6 × 1 mm	10	6	14.2	1.1	ISO Class 10	DIN 6923, ISO 4161	50	97765A110	0000
				M8 × 1.25 mm	13	8	17.5	1.2	ISO Class 10	DIN 6923, ISO 4161	25	97765A120	0000
				M10 × 1.5 mm	15	10	21.8	1.5	ISO Class 10	DIN 6923, ISO 4161	10	97765A130	0000
				M12 × 1.25 mm	18	12	26	1.8	ISO Class 10	DIN 6923, ISO 4161	5	97765A150	00000
				M12 × 1.5 mm	18	12	26	1.8	ISO Class 10	DIN 6923, ISO 4161	5	97765A160	00000
				M12 × 1.75 mm	18	12	26	1.8	ISO Class 10	DIN 6923, ISO 4161	10	97765A140	0000
				M14 × 2 mm	21	14	29.9	2.1	ISO Class 10	DIN 6923, ISO 4161	5	97765A170	0000
				M16 × 1.5 mm	24	16	34.5	2.4	ISO Class 10	DIN 6923, ISO 4161	1	97765A180	0000
				M16 × 2 mm	24	16	34.5	2.4	ISO Class 10	DIN 6923, ISO 4161	5	97765A190	0000
				M20 × 2.5 mm	30	20	42.8	3	ISO Class 10	DIN 6923, ISO 4161	1	97765A210	0000

				Black Phosphate-Coated Steel


						M5 × 0.8 mm	8	5	11.8	1	ISO Class 10	DIN 6923, ISO 4161	100	94942A111	0000
						M6 × 1 mm	10	6	14.2	1.1	ISO Class 10	DIN 6923, ISO 4161	100	94942A101	00000
						M8 × 1.25 mm	13	8	17.9	1.2	ISO Class 10	DIN 6923, ISO 4161	100	94942A102	00000
						M10 × 1.25 mm	15	10	21.8	1.5	ISO Class 10	DIN 6923, ISO 4161	10	94942A106	00000
						M10 × 1.5 mm	15	10	21.8	1.5	ISO Class 10	DIN 6923, ISO 4161	50	94942A103	00000
						M12 × 1.25 mm	18	12	26	1.8	ISO Class 10	DIN 6923, ISO 4161	5	94942A107	00000
						M12 × 1.5 mm	18	12	26	1.8	ISO Class 10	DIN 6923, ISO 4161	5	94942A108	00000
						M12 × 1.75 mm	18	12	26	1.8	ISO Class 10	DIN 6923, ISO 4161	25	94942A104	00000
						M16 × 1.5 mm	24	16	34.5	2.4	ISO Class 10	DIN 6923, ISO 4161	1	94942A109	0000
						M16 × 2 mm	24	16	34.5	2.4	ISO Class 10	DIN 6923, ISO 4161	10	94942A105	00000

						Steel


								M5 × 0.8 mm	8	5	11.8	1	ISO Class 10	DIN 6923, ISO 4161	100	95003A205	00000
								M6 × 1 mm	10	6	14.2	1.1	ISO Class 10	DIN 6923, ISO 4161	100	95003A206	00000
								M8 × 1.25 mm	13	8	17.9	1.2	ISO Class 10	DIN 6923, ISO 4161	50	95003A207	0000
								M10 × 1.5 mm	15	10	21.8	1.5	ISO Class 10	DIN 6923, ISO 4161	50	95003A208	00000
								M12 × 1.75 mm	18	12	26	1.8	ISO Class 10	DIN 6923, ISO 4161	25	95003A209	00000
								M14 × 2 mm	21	14	29.9	2.1	ISO Class 10	DIN 6923, ISO 4161	10	95003A211	0000
								M16 × 2 mm	24	16	34.5	2.4	ISO Class 10	DIN 6923, ISO 4161	10	95003A212	00000
								M20 × 2.5 mm	30	20	42.8	3	ISO Class 10	DIN 6923, ISO 4161	5	95003A213	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—Our most corrosion-resistant flange nuts, these hold up in just about any environment, including harsh weather, salt water, and most chemicals.

				Flange, mm
	Thread Size	Wd., mm	Ht., mm	Dia.	Thk.	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel


		M3 × 0.5 mm	5.5	4	8	1	DIN 6923, ISO 4161	100	93033A107	00000
		M4 × 0.7 mm	7	4	10	0.9	DIN 6923, ISO 4161	50	93033A105	00000
		M5 × 0.8 mm	8	5	11.8	1	DIN 6923, ISO 4161	50	93033A106	00000
		M6 × 1 mm	10	6	14.2	1.19	DIN 6923, ISO 4161	50	93033A101	0000
		M8 × 1.25 mm	13	8	17.9	1.31	DIN 6923, ISO 4161	25	93033A102	0000
		M10 × 1.5 mm	15	10	21.8	1.81	DIN 6923, ISO 4161	10	93033A103	0000
		M12 × 1.75 mm	18	12	26	2.2	DIN 6923, ISO 4161	10	93033A104	00000

		Super-Corrosion-Resistant 316 Stainless Steel


				M3 × 0.5 mm	5.5	4	8	0.7	DIN 6923	100	94777A105	0000
				M4 × 0.7 mm	7	4	10	0.9	DIN 6923	100	94777A106	00000
				M5 × 0.8 mm	8	5	11.8	1	DIN 6923	100	94777A107	00000
				M6 × 1 mm	10	6	14.2	1.19	DIN 6923	50	94777A101	00000
				M8 × 1.25 mm	13	8	17.9	1.31	DIN 6923	10	94777A102	0000
				M10 × 1.5 mm	15	10	21.8	1.81	DIN 6923	10	94777A103	0000
				M12 × 1.75 mm	18	12	26	2.2	DIN 6923	5	94777A104	0000