DIN 6926 Flange Nuts | McMaster-Carr

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18-8 Stainless Steel

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34 Products

Nylon-Insert Flange Nuts

A nylon insert grips the screw for a stronger hold than a serrated flange, without damaging threads or marring the surface of your material. However, the insert may become brittle if exposed to high temperatures. These nuts have a flange that distributes pressure evenly across the mounting surface, so you don't need a separate washer. They are ideal for securing screws in oversized or irregularly shaped holes since the flange covers a larger area than standard nuts. You can reuse them a handful of times, but their holding power will decrease with each use. Also known as collar nuts.

Medium-Strength Steel

Image of Product. Front orientation. Flange Nuts. Nylon-Insert 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.

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.

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


		M5 × 0.8 mm	8	7.1	11.8	1	ISO Class 8	DIN 6926	250	100	000000000	00000
		M6 × 1 mm	10	9.1	14.2	1.1	ISO Class 8	DIN 6926	250	100	000000000	0000
		M8 × 1.25 mm	13	11.1	17.9	1.2	ISO Class 8	DIN 6926	250	100	000000000	00000
		M10 × 1.5 mm	15	13.5	21.8	1.5	ISO Class 8	DIN 6926	250	50	000000000	00000
		M12 × 1.75 mm	18	16.1	26	1.8	ISO Class 8	DIN 6926	250	25	000000000	00000
		M14 × 2 mm	21	18.8	29.9	2.1	ISO Class 8	DIN 6926	250	5	000000000	0000
		M16 × 2 mm	24	20.3	34.5	2.4	ISO Class 8	DIN 6926	250	10	000000000	00000
		M20 × 2.5 mm	30	24.8	42.8	3	ISO Class 8	DIN 6926	250	1	000000000	0000

		Black Corrosion-Resistant-Coated Steel


				M5 × 0.8 mm	8	7.1	11.8	1	ISO Class 8	DIN 6926	250	5	000000000	0000
				M6 × 1 mm	10	9.1	14.2	1.1	ISO Class 8	DIN 6926	250	5	000000000	0000
				M8 × 1.25 mm	13	11.1	17.9	1.2	ISO Class 8	DIN 6926	250	5	000000000	0000
				M12 × 1.75 mm	18	16.1	26	1.8	ISO Class 8	DIN 6926	250	5	000000000	00000

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.

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.

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


		M6 × 1 mm	10	9.1	14.2	1.1	ISO Class 10	DIN 6926	250	25	000000000	000000
		M8 × 1.25 mm	13	11.1	17.9	1.2	ISO Class 10	DIN 6926	250	10	000000000	0000
		M10 × 1.25 mm	15	13.5	21.8	1.5	ISO Class 10	DIN 6926	250	5	000000000	00000
		M10 × 1.5 mm	15	13.5	21.8	1.5	ISO Class 10	DIN 6926	250	10	000000000	00000
		M12 × 1.25 mm	18	16.1	26	1.8	ISO Class 10	DIN 6926	250	1	000000000	0000
		M12 × 1.5 mm	18	16.1	26	1.8	ISO Class 10	DIN 6926	250	1	000000000	0000
		M12 × 1.75 mm	18	16.1	26	1.8	ISO Class 10	DIN 6926	250	5	000000000	00000
		M14 × 1.5 mm	21	18.2	29.9	2.1	ISO Class 10	DIN 6926	250	1	000000000	0000
		M14 × 2 mm	21	18.2	29.9	2.1	ISO Class 10	DIN 6926	250	1	000000000	0000
		M16 × 2 mm	24	20.3	34.5	2.4	ISO Class 10	DIN 6926	250	1	000000000	0000

		Zinc-Yellow-Chromate-Plated Steel


				M6 × 1 mm	10	9.1	14.2	1.1	ISO Class 10	DIN 6926	250	50	000000000	00000
				M8 × 1.25 mm	13	11	17.9	1.2	ISO Class 10	DIN 6926	250	50	000000000	00000
				M10 × 1.5 mm	15	13.5	21.8	1.5	ISO Class 10	DIN 6926	250	25	000000000	00000
				M12 × 1.75 mm	18	16.1	26	1.8	ISO Class 10	DIN 6926	250	25	000000000	00000
				M14 × 2 mm	21	18.2	29.9	2.1	ISO Class 10	DIN 6926	250	10	000000000	00000
				M16 × 2 mm	24	20.3	34.5	2.4	ISO Class 10	DIN 6926	250	5	000000000	00000
				M20 × 2.5 mm	30	24.8	42.8	3	ISO Class 10	DIN 6926	250	1	000000000	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.

				Flange, mm
	Thread Size	Wd., mm	Ht., mm	Dia.	Thk.	Specs. Met	Insert Max. Temp., ° F	Pkg. Qty.		Pkg.
18-8 Stainless Steel


		M5 × 0.8 mm	8	7.1	11.8	1	DIN 6926	250	10	000000000	000000
		M6 × 1 mm	10	9.1	14.2	1.1	DIN 6926	250	10	000000000	00000
		M8 × 1.25 mm	13	11.1	17.9	1.2	DIN 6926	250	5	000000000	00000
		M10 × 1.5 mm	15	13.5	21.8	1.5	DIN 6926	250	5	000000000	00000
		M12 × 1.75 mm	18	16.1	26	1.8	DIN 6926	250	1	000000000	0000