Tooling Component Flange Nuts

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Zinc Yellow-Chromate Plated

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Fastener Strength Rating

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Performance

Washer Material

Specifications Met

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Compliant with Exemptions

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Export Control Classification Number (ECCN)

EAR99

Thread Fit

Metric Class 6G

Metric Class 6H

Unified Standard Class 2B

Washer Thickness

Maximum Correction

264 Products

Application

General Purpose

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

224 products

Thread Repairing

Cut through rust, residue, and weld spatter to restore damaged threads

4 products

Performance

High Strength

Withstand heavy loads and high stress without cracking

107 products

Corrosion Resistant

Won't rust in wet and outdoor environments

60 products

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.

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.

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

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


		1/4"-20	7/16"	15/64"	19/32"	0.04"	SAE Grade 5	—	100	000000000	000000
		5/16"-18	1/2"	9/32"	11/16"	0.04"	SAE Grade 5	—	100	000000000	00000
		3/8"-16	9/16"	11/32"	3/4"	0.04"	SAE Grade 5	—	100	000000000	00000
		1/2"-13	3/4"	29/64"	1 1/32"	0.05"	SAE Grade 5	—	50	000000000	00000
		5/8"-11	15/16"	9/16"	1 9/32"	0.05"	SAE Grade 5	—	10	000000000	0000
		M3 × 0.5 mm	5.5 mm	4 mm	8 mm	0.8 mm	ISO Class 8	DIN 6923	50	000000000	0000
		M4 × 0.7 mm	7 mm	4.65 mm	10 mm	1.65 mm	ISO Class 8	DIN 6923, ISO 4161	100	000000000	0000
		M5 × 0.8 mm	8 mm	5 mm	11.8 mm	2.8 mm	ISO Class 8	DIN 6923, ISO 4161	100	000000000	0000
		M6 × 1 mm	10 mm	6 mm	14.2 mm	2.9 mm	ISO Class 8	DIN 6923, ISO 4161	100	000000000	0000
		M8 × 1 mm	13 mm	8 mm	17.9 mm	3.5 mm	ISO Class 8	DIN 6923, ISO 4161	50	000000000	00000
		M8 × 1.25 mm	13 mm	8 mm	17.9 mm	3.5 mm	ISO Class 8	DIN 6923, ISO 4161	100	000000000	00000
		M10 × 1.25 mm	15 mm	10 mm	21.8 mm	4.5 mm	ISO Class 8	DIN 6923, ISO 4161	50	000000000	00000
		M10 × 1.5 mm	15 mm	10 mm	21.8 mm	4.5 mm	ISO Class 8	DIN 6923, ISO 4161	50	000000000	00000
		M12 × 1.25 mm	18 mm	12 mm	26 mm	5.3 mm	ISO Class 8	DIN 6923, ISO 4161	25	000000000	00000
		M12 × 1.5 mm	18 mm	12 mm	26 mm	5.3 mm	ISO Class 8	DIN 6923, ISO 4161	10	000000000	0000
		M12 × 1.75 mm	18 mm	12 mm	26 mm	5.3 mm	ISO Class 8	DIN 6923, ISO 4161	25	000000000	00000
		M14 × 2 mm	21 mm	14 mm	29.9 mm	6.2 mm	ISO Class 8	DIN 6923, ISO 4161	10	000000000	00000
		M16 × 1.5 mm	24 mm	16 mm	34.5 mm	7 mm	ISO Class 8	DIN 6923, ISO 4161	1	000000000	0000
		M16 × 2 mm	24 mm	16 mm	34.5 mm	7 mm	ISO Class 8	DIN 6923, ISO 4161	10	000000000	00000
		M20 × 2.5 mm	30 mm	20 mm	42.8 mm	9 mm	ISO Class 8	DIN 6923, ISO 4161	5	000000000	00000

		Steel


				M6 × 1 mm	10 mm	6 mm	14.2 mm	1.1 mm	ISO Class 8	DIN 6923	100	000000000	0000
				M8 × 1.25 mm	13 mm	8 mm	17.9 mm	1.2 mm	ISO Class 8	DIN 6923	50	000000000	0000
				M10 × 1.25 mm	15 mm	10 mm	21.8 mm	1.5 mm	ISO Class 8	DIN 6923	25	000000000	0000
				M10 × 1.5 mm	15 mm	10 mm	21.8 mm	1.5 mm	ISO Class 8	DIN 6923	25	000000000	0000
				M12 × 1.25 mm	18 mm	12 mm	26 mm	1.8 mm	ISO Class 8	DIN 6923	10	000000000	0000
				M12 × 1.5 mm	18 mm	12 mm	26 mm	1.8 mm	ISO Class 8	DIN 6923	10	000000000	0000
				M12 × 1.75 mm	18 mm	12 mm	26 mm	1.8 mm	ISO Class 8	DIN 6923	25	000000000	0000
				M16 × 1.5 mm	24 mm	16 mm	34.5 mm	2.4 mm	ISO Class 8	DIN 6923	5	000000000	0000
				M16 × 2 mm	24 mm	16 mm	34.5 mm	2.4 mm	ISO Class 8	DIN 6923	10	000000000	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.

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


		1/4"-20	7/16"	15/64"	19/32"	0.06"	SAE Grade 8	—	100	000000000	000000
		5/16"-18	1/2"	9/32"	11/16"	0.07"	SAE Grade 8	—	100	000000000	00000
		3/8"-16	9/16"	11/32"	3/4"	0.08"	SAE Grade 8	—	50	000000000	00000
		1/2"-13	3/4"	29/64"	1 1/32"	0.1"	SAE Grade 8	—	25	000000000	00000
		5/8"-11	15/16"	9/16"	1 9/32"	0.12"	SAE Grade 8	—	10	000000000	00000
		3/4"-10	1 1/8"	21/32"	1 1/2"	0.16"	SAE Grade 8	—	10	000000000	00000
		3/4"-16	1 1/8"	21/32"	1 1/2"	0.16"	SAE Grade 8	—	5	000000000	00000
		M5 × 0.8 mm	8 mm	5 mm	11.8 mm	1 mm	ISO Class 10	DIN 6923, ISO 4161	25	000000000	00000
		M6 × 1 mm	10 mm	6 mm	14.2 mm	1.1 mm	ISO Class 10	DIN 6923, ISO 4161	100	000000000	0000
		M8 × 1.25 mm	13 mm	8 mm	17.9 mm	1.2 mm	ISO Class 10	DIN 6923, ISO 4161	100	000000000	00000
		M10 × 1.25 mm	15 mm	10 mm	21.8 mm	1.5 mm	ISO Class 10	DIN 6923, ISO 4161	10	000000000	0000
		M10 × 1.5 mm	15 mm	10 mm	21.8 mm	1.5 mm	ISO Class 10	DIN 6923, ISO 4161	50	000000000	00000
		M12 × 1.25 mm	18 mm	12 mm	26 mm	1.8 mm	ISO Class 10	DIN 6923, ISO 4161	5	000000000	0000
		M12 × 1.5 mm	18 mm	12 mm	26 mm	1.8 mm	ISO Class 10	DIN 6923, ISO 4161	5	000000000	0000
		M12 × 1.75 mm	18 mm	12 mm	26 mm	1.8 mm	ISO Class 10	DIN 6923, ISO 4161	25	000000000	0000
		M14 × 1.5 mm	21 mm	14 mm	29.9 mm	2.1 mm	ISO Class 10	DIN 6923, ISO 4161	10	000000000	00000
		M16 × 1.5 mm	24 mm	16 mm	34.5 mm	2.4 mm	ISO Class 10	DIN 6923, ISO 4161	1	000000000	0000
		M16 × 2 mm	24 mm	16 mm	34.5 mm	2.4 mm	ISO Class 10	DIN 6923, ISO 4161	10	000000000	00000
		M20 × 2.5 mm	30 mm	20 mm	42.8 mm	3 mm	ISO Class 10	DIN 6923, ISO 4161	1	000000000	0000
		M24 × 3 mm	36 mm	24 mm	51 mm	3.6 mm	ISO Class 10	DIN 6923, ISO 4161	1	000000000	00000

		Zinc-Yellow-Chromate-Plated Steel


				1/4"-20	7/16"	15/64"	19/32"	0.06"	SAE Grade 8	—	10	000000000	0000
				5/16"-18	1/2"	9/32"	11/16"	0.07"	SAE Grade 8	—	10	000000000	0000
				3/8"-16	9/16"	11/32"	3/4"	0.08"	SAE Grade 8	—	10	000000000	0000
				1/2"-13	3/4"	29/64"	1 1/32"	0.1"	SAE Grade 8	—	10	000000000	0000
				5/8"-11	15/16"	9/16"	1 9/32"	0.12"	SAE Grade 8	—	5	000000000	00000
				5/8"-18	15/16"	9/16"	1 9/32"	0.12"	SAE Grade 8	—	5	000000000	00000
				3/4"-10	1 1/8"	21/32"	1 1/2"	0.16"	SAE Grade 8	—	1	000000000	0000
				3/4"-16	1 1/8"	21/32"	1 1/2"	0.16"	SAE Grade 8	—	1	000000000	0000
				1"-8	1 1/2"	57/64"	2 1/16"	0.21"	SAE Grade 8	—	1	000000000	0000
				M6 × 1 mm	10 mm	6 mm	14.2 mm	1.1 mm	ISO Class 10	DIN 6923, ISO 4161	50	000000000	0000
				M8 × 1.25 mm	13 mm	8 mm	17.5 mm	1.2 mm	ISO Class 10	DIN 6923, ISO 4161	25	000000000	0000
				M10 × 1.5 mm	15 mm	10 mm	21.8 mm	1.5 mm	ISO Class 10	DIN 6923, ISO 4161	10	000000000	0000
				M12 × 1.25 mm	18 mm	12 mm	26 mm	1.8 mm	ISO Class 10	DIN 6923, ISO 4161	5	000000000	00000
				M12 × 1.5 mm	18 mm	12 mm	26 mm	1.8 mm	ISO Class 10	DIN 6923, ISO 4161	5	000000000	00000
				M12 × 1.75 mm	18 mm	12 mm	26 mm	1.8 mm	ISO Class 10	DIN 6923, ISO 4161	10	000000000	0000
				M14 × 2 mm	21 mm	14 mm	29.9 mm	2.1 mm	ISO Class 10	DIN 6923, ISO 4161	5	000000000	0000
				M16 × 1.5 mm	24 mm	16 mm	34.5 mm	2.4 mm	ISO Class 10	DIN 6923, ISO 4161	1	000000000	0000
				M16 × 2 mm	24 mm	16 mm	34.5 mm	2.4 mm	ISO Class 10	DIN 6923, ISO 4161	5	000000000	0000
				M20 × 2.5 mm	30 mm	20 mm	42.8 mm	3 mm	ISO Class 10	DIN 6923, ISO 4161	1	000000000	0000

				Black Phosphate-Coated Steel


						1/4"-20	7/16"	15/64"	19/32"	0.06"	SAE Grade 8	—	100	000000000	00000
						1/4"-28	7/16"	15/64"	19/32"	0.06"	SAE Grade 8	—	100	000000000	00000
						5/16"-18	1/2"	9/32"	11/16"	0.07"	SAE Grade 8	—	100	000000000	00000
						5/16"-24	1/2"	9/32"	11/16"	0.07"	SAE Grade 8	—	100	000000000	00000
						3/8"-16	9/16"	11/32"	3/4"	0.07"	SAE Grade 8	—	50	000000000	0000
						1/2"-13	3/4"	29/64"	1 1/32"	0.1"	SAE Grade 8	—	25	000000000	00000
						1/2"-20	3/4"	29/64"	1 1/32"	0.1"	SAE Grade 8	—	25	000000000	00000
						5/8"-11	15/16"	9/16"	1 9/32"	0.12"	SAE Grade 8	—	10	000000000	00000
						5/8"-18	15/16"	9/16"	1 9/32"	0.12"	SAE Grade 8	—	10	000000000	00000
						3/4"-10	1 1/8"	21/32"	1 1/2"	0.16"	SAE Grade 8	—	10	000000000	00000
						3/4"-16	1 1/8"	21/32"	1 1/2"	0.16"	SAE Grade 8	—	10	000000000	00000
						7/8"-14	1 5/16"	51/64"	1 3/4"	0.19"	SAE Grade 8	—	1	000000000	0000
						M5 × 0.8 mm	8 mm	5 mm	11.8 mm	1 mm	ISO Class 10	DIN 6923, ISO 4161	100	000000000	0000
						M6 × 1 mm	10 mm	6 mm	14.2 mm	1.1 mm	ISO Class 10	DIN 6923, ISO 4161	100	000000000	00000
						M8 × 1.25 mm	13 mm	8 mm	17.9 mm	1.2 mm	ISO Class 10	DIN 6923, ISO 4161	100	000000000	00000
M10 × 1.25 mm						15 mm	10 mm	21.8 mm	1.5 mm	ISO Class 10	DIN 6923, ISO 4161	10	000000000	00000
M10 × 1.5 mm	15 mm					10 mm	21.8 mm	1.5 mm	ISO Class 10	DIN 6923, ISO 4161	50	000000000	00000
M12 × 1.25 mm	18 mm					12 mm	26 mm	1.8 mm	ISO Class 10	DIN 6923, ISO 4161	5	000000000	00000
M12 × 1.5 mm	18 mm					12 mm	26 mm	1.8 mm	ISO Class 10	DIN 6923, ISO 4161	5	000000000	00000
M12 × 1.75 mm	18 mm					12 mm	26 mm	1.8 mm	ISO Class 10	DIN 6923, ISO 4161	25	000000000	00000
M16 × 1.5 mm	24 mm					16 mm	34.5 mm	2.4 mm	ISO Class 10	DIN 6923, ISO 4161	1	000000000	0000
M16 × 2 mm	24 mm					16 mm	34.5 mm	2.4 mm	ISO Class 10	DIN 6923, ISO 4161	10	000000000	00000

Steel


						1/4"-20	7/16"	15/64"	19/32"	0.06"	SAE Grade 8	—	100	000000000	00000
						1/4"-28	7/16"	15/64"	19/32"	0.06"	SAE Grade 8	—	100	000000000	00000
						5/16"-18	1/2"	9/32"	11/16"	0.07"	SAE Grade 8	—	25	000000000	00000
						3/8"-16	9/16"	11/32"	3/4"	0.08"	SAE Grade 8	—	10	000000000	0000
						1/2"-13	3/4"	29/64"	1 1/32"	0.1"	SAE Grade 8	—	10	000000000	0000
						1/2"-20	3/4"	29/64"	1 1/32"	0.1"	SAE Grade 8	—	10	000000000	00000
						9/16"-18	7/8"	1/2"	1 3/16"	0.11"	SAE Grade 8	—	5	000000000	00000
						5/8"-11	15/16"	9/16"	1 9/32"	0.12"	SAE Grade 8	—	5	000000000	00000
						5/8"-18	15/16"	9/16"	1 9/32"	0.12"	SAE Grade 8	—	5	000000000	00000
						3/4"-10	1 1/8"	21/32"	1 1/2"	0.16"	SAE Grade 8	—	1	000000000	0000
						3/4"-16	1 1/8"	21/32"	1 1/2"	0.16"	SAE Grade 8	—	1	000000000	0000
						7/8"-9	1 5/16"	51/64"	1 3/4"	0.19"	SAE Grade 8	—	1	000000000	0000
						1"-8	1 1/2"	57/64"	2 1/16"	0.21"	SAE Grade 8	—	1	000000000	0000
						1"-14	1 1/2"	57/64"	2 1/16"	0.21"	SAE Grade 8	—	1	000000000	0000
		M5 × 0.8 mm				8 mm	5 mm	11.8 mm	1 mm	ISO Class 10	DIN 6923, ISO 4161	100	000000000	00000
		M6 × 1 mm	10 mm			6 mm	14.2 mm	1.1 mm	ISO Class 10	DIN 6923, ISO 4161	100	000000000	00000
		M8 × 1.25 mm	13 mm			8 mm	17.9 mm	1.2 mm	ISO Class 10	DIN 6923, ISO 4161	50	000000000	0000
		M10 × 1.5 mm	15 mm			10 mm	21.8 mm	1.5 mm	ISO Class 10	DIN 6923, ISO 4161	50	000000000	00000
		M12 × 1.75 mm	18 mm			12 mm	26 mm	1.8 mm	ISO Class 10	DIN 6923, ISO 4161	25	000000000	00000
		M14 × 2 mm	21 mm			14 mm	29.9 mm	2.1 mm	ISO Class 10	DIN 6923, ISO 4161	10	000000000	0000
		M16 × 2 mm	24 mm			16 mm	34.5 mm	2.4 mm	ISO Class 10	DIN 6923, ISO 4161	10	000000000	00000
		M20 × 2.5 mm	30 mm			20 mm	42.8 mm	3 mm	ISO Class 10	DIN 6923, ISO 4161	5	000000000	00000

Low-Strength Steel

About half the strength of medium-strength steel nuts, these 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.

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.

				Flange
	Thread Size	Wd.	Ht.	Dia.	Thk.	Pkg. Qty.		Pkg.
Zinc-Plated Steel


		M5 × 0.8 mm	8 mm	6 mm	14 mm	1.5 mm	1	000000000	00000
		M6 × 1 mm	10 mm	8 mm	16 mm	2 mm	1	000000000	0000
		M8 × 1.25 mm	13 mm	10 mm	19 mm	2.5 mm	1	000000000	0000
		M10 × 1.5 mm	17 mm	13 mm	22 mm	3 mm	1	000000000	0000
		M12 × 1.75 mm	19 mm	17 mm	27 mm	4 mm	1	000000000	0000
		M16 × 2 mm	24 mm	21 mm	33 mm	5 mm	1	000000000	0000

		Black-Oxide Steel


				1/4"-20	1/2"	5/16"	5/8"	0.09"	4	000000000	00000
				1/4"-28	1/2"	5/16"	5/8"	0.09"	4	000000000	00000
				5/16"-18	9/16"	3/8"	3/4"	0.13"	4	000000000	00000
				5/16"-24	9/16"	3/8"	3/4"	0.13"	4	000000000	00000
				3/8"-16	11/16"	1/2"	7/8"	0.13"	4	000000000	00000
				3/8"-24	11/16"	1/2"	7/8"	0.13"	4	000000000	00000
				7/16"-14	3/4"	9/16"	1"	0.16"	4	000000000	00000
				7/16"-20	3/4"	9/16"	1"	0.16"	4	000000000	00000
				1/2"-13	7/8"	11/16"	1 1/8"	0.19"	4	000000000	00000
				1/2"-20	7/8"	11/16"	1 1/8"	0.19"	4	000000000	00000
				5/8"-11	1 1/16"	13/16"	1 3/8"	0.19"	4	000000000	00000
				5/8"-18	1 1/16"	13/16"	1 3/8"	0.19"	1	000000000	0000
				3/4"-10	1 1/4"	1"	1 5/8"	0.25"	1	000000000	0000
				3/4"-16	1 1/4"	1"	1 5/8"	0.25"	1	000000000	0000
				7/8"-9	1 7/16"	1 1/8"	1 3/4"	0.25"	1	000000000	0000
				7/8"-14	1 7/16"	1 1/8"	1 3/4"	0.25"	1	000000000	0000
				1"-8	1 5/8"	1 1/4"	2"	0.25"	1	000000000	00000
				1"-14	1 5/8"	1 1/4"	2"	0.25"	1	000000000	00000
				1 1/4"-7	1 13/16"	1 1/4"	2 1/2"	0.25"	1	000000000	00000
				M6 × 1 mm	10 mm	8 mm	16 mm	2 mm	1	000000000	0000
				M8 × 1.25 mm	13 mm	10 mm	19 mm	2.5 mm	1	000000000	0000
				M10 × 1.5 mm	17 mm	13 mm	22 mm	3 mm	1	000000000	0000
				M12 × 1.75 mm	19 mm	17 mm	27 mm	4 mm	1	000000000	0000
				M16 × 2 mm	24 mm	21 mm	33 mm	5 mm	1	000000000	0000
				M20 × 2.5 mm	30 mm	25 mm	40 mm	6 mm	1	000000000	0000
				M24 × 3 mm	36 mm	32 mm	49 mm	7 mm	1	000000000	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
	Thread Size	Wd.	Ht.	Dia.	Thk.	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel


		2-56	1/8"	3/32"	11/64"	0.02"	—	1	000000000	00000
		3-48	15/64"	1/8"	15/64"	0.03"	—	1	000000000	0000
		3-56	15/64"	1/8"	15/64"	0.03"	—	1	000000000	0000
		4-40	1/4"	7/32"	3/8"	0.05"	—	1	000000000	0000
		5-40	5/16"	11/64"	13/32"	0.05"	—	1	000000000	0000
		6-32	5/16"	7/32"	13/32"	0.05"	—	1	000000000	0000
		6-40	5/16"	11/64"	13/32"	0.05"	—	1	000000000	0000
		8-32	11/32"	1/4"	15/32"	0.06"	—	1	000000000	0000
		10-24	3/8"	5/16"	1/2"	0.06"	—	1	000000000	0000
		10-32	3/8"	5/16"	1/2"	0.06"	—	1	000000000	0000
		12-24	3/8"	7/32"	1/2"	0.06"	—	1	000000000	0000
		1/4"-20	1/2"	5/16"	5/8"	0.09"	—	1	000000000	0000
		1/4"-28	1/2"	5/16"	5/8"	0.09"	—	1	000000000	0000
		5/16"-18	9/16"	3/8"	3/4"	0.13"	—	1	000000000	0000
		5/16"-24	9/16"	3/8"	3/4"	0.09"	—	1	000000000	0000
		3/8"-16	11/16"	1/2"	7/8"	0.13"	—	1	000000000	0000
		3/8"-24	11/16"	1/2"	7/8"	0.13"	—	1	000000000	0000
		7/16"-14	3/4"	9/16"	1"	0.16"	—	1	000000000	0000
		7/16"-20	3/4"	9/16"	1"	0.16"	—	1	000000000	0000
		1/2"-13	7/8"	11/16"	1 1/8"	0.16"	—	1	000000000	00000
		1/2"-20	7/8"	11/16"	1 1/8"	0.16"	—	1	000000000	00000
		5/8"-11	1 1/16"	13/16"	1 3/8"	0.19"	—	1	000000000	00000
		5/8"-18	1 1/16"	13/16"	1 3/8"	0.19"	—	1	000000000	00000
		3/4"-10	1 1/4"	1"	1 5/8"	0.25"	—	1	000000000	00000
		3/4"-16	1 1/4"	1"	1 5/8"	0.25"	—	1	000000000	00000
		7/8"-9	1 7/16"	1 1/8"	1 3/4"	0.25"	—	1	000000000	00000
		1"-8	1 5/8"	1 1/4"	2"	0.25"	—	1	000000000	00000
		1"-14	1 5/8"	1 1/4"	2"	0.25"	—	1	000000000	00000
		1 1/4"-7	1 13/16"	1 1/4"	2 1/4"	0.25"	—	1	000000000	00000
		M3 × 0.5 mm	5.5 mm	4 mm	8 mm	1 mm	DIN 6923, ISO 4161	100	000000000	0000
		M4 × 0.7 mm	7 mm	4 mm	10 mm	0.9 mm	DIN 6923, ISO 4161	50	000000000	00000
		M5 × 0.8 mm	8 mm	5 mm	11.8 mm	1 mm	DIN 6923, ISO 4161	50	000000000	00000
		M6 × 1 mm	10 mm	6 mm	14.2 mm	1.19 mm	DIN 6923, ISO 4161	50	000000000	0000
		M8 × 1.25 mm	13 mm	8 mm	17.9 mm	1.31 mm	DIN 6923, ISO 4161	25	000000000	0000
		M10 × 1.5 mm	15 mm	10 mm	21.8 mm	1.81 mm	DIN 6923, ISO 4161	10	000000000	0000
		M12 × 1.75 mm	18 mm	12 mm	26 mm	2.2 mm	DIN 6923, ISO 4161	10	000000000	00000

		Super-Corrosion-Resistant 316 Stainless Steel


				8-32	11/32"	13/64"	15/32"	0.06"	—	50	000000000	0000
				10-24	3/8"	7/32"	1/2"	0.06"	—	50	000000000	00000
				10-32	3/8"	7/32"	1/2"	0.06"	—	50	000000000	00000
				1/4"-20	7/16"	15/64"	19/32"	0.09"	—	50	000000000	00000
				5/16"-18	1/2"	9/32"	11/16"	0.13"	—	25	000000000	0000
				3/8"-16	9/16"	11/32"	3/4"	0.13"	—	25	000000000	00000
				1/2"-13	3/4"	29/64"	1 1/64"	0.16"	—	10	000000000	00000
				M3 × 0.5 mm	5.5 mm	4 mm	8 mm	0.7 mm	DIN 6923	100	000000000	0000
				M4 × 0.7 mm	7 mm	4 mm	10 mm	0.9 mm	DIN 6923	100	000000000	00000
				M5 × 0.8 mm	8 mm	5 mm	11.8 mm	1 mm	DIN 6923	100	000000000	00000
				M6 × 1 mm	10 mm	6 mm	14.2 mm	1.19 mm	DIN 6923	50	000000000	00000
				M8 × 1.25 mm	13 mm	8 mm	17.9 mm	1.31 mm	DIN 6923	10	000000000	0000
				M10 × 1.5 mm	15 mm	10 mm	21.8 mm	1.81 mm	DIN 6923	10	000000000	0000
				M12 × 1.75 mm	18 mm	12 mm	26 mm	2.2 mm	DIN 6923	5	000000000	0000

JIS Flange Nuts

Fasten parts and components that are made to Japanese Industrial Standards. These nuts have a flange that distributes pressure evenly across the mounting surface without the need for a separate washer. Since the flange covers a larger area than standard nuts, these are ideal for securing screws in oversized or irregularly shaped holes. Also known as collar nuts.

Medium-Strength Steel

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

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

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


		M3 × 0.5 mm	5.5	3.7	8	0.6	ISO Class 8	JIS B 1190	100	000000000	000000
		M4 × 0.7 mm	7	4.2	10.5	0.6	ISO Class 8	JIS B 1190	100	000000000	00000
		M5 × 0.8 mm	8	5	11.8	0.7	ISO Class 8	JIS B 1190	100	000000000	00000
		M6 × 1 mm	10	6	14	0.8	ISO Class 8	JIS B 1190	100	000000000	00000
		M8 × 1 mm	12	8	17.5	1.1	ISO Class 8	JIS B 1190	10	000000000	00000
		M8 × 1.25 mm	12	8	17.5	1.1	ISO Class 8	JIS B 1190	25	000000000	00000
		M10 × 1 mm	14	10	21	1.2	ISO Class 8	JIS B 1190	10	000000000	00000
		M10 × 1.25 mm	14	10	21	1.2	ISO Class 8	JIS B 1190	5	000000000	0000
		M12 × 1.25 mm	17	11.5	25	1.4	ISO Class 8	JIS B 1190	5	000000000	0000
		M12 × 1.75 mm	17	11.5	25	1.4	ISO Class 8	JIS B 1190	5	000000000	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.

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


		M5 × 0.8 mm	8	5	11.8	0.7	ISO Class 10	JIS B 1190	50	000000000	00000
		M6 × 1 mm	10	6	14	0.8	ISO Class 10	JIS B 1190	100	000000000	0000
		M8 × 1.25 mm	12	8	17.5	1	ISO Class 10	JIS B 1190	50	000000000	0000
		M10 × 1 mm	14	10	21	1.2	ISO Class 10	JIS B 1190	1	000000000	0000
		M10 × 1.25 mm	14	10	21	1.2	ISO Class 10	JIS B 1190	10	000000000	00000
		M12 × 1.25 mm	17	11.5	25	1.4	ISO Class 10	JIS B 1190	25	000000000	0000

		Black Phosphate-Coated Steel


				M6 × 1 mm	10	6	14	0.8	ISO Class 10	JIS B 1190	100	000000000	00000
				M8 × 1.25 mm	12	8	17.5	1.1	ISO Class 10	JIS B 1190	100	000000000	00000
				M10 × 1.25 mm	14	10	21	1.2	ISO Class 10	JIS B 1190	50	000000000	00000

High-Profile Flange Nuts

30% taller than standard-profile nuts, these have a large gripping area so your wrench or socket won't slip off as you tighten them. They also engage more threads for extra gripping power. Nuts have a flange that distributes pressure evenly across the mounting surface without the need for 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. Also known as collar nuts.

High-Strength Steel

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.
Steel


		M6 × 1 mm	10	9	14	3	ISO Class 10	DIN 6331	50	000000000	000000
		M8 × 1.25 mm	13	12	18	3.5	ISO Class 10	DIN 6331	25	000000000	00000
		M10 × 1.5 mm	16	15	22	4	ISO Class 10	DIN 6331	10	000000000	00000
		M12 × 1.75 mm	18	18	25	4	ISO Class 10	DIN 6331	10	000000000	00000
		M14 × 2 mm	22	21	28	4	ISO Class 10	DIN 6331	5	000000000	00000
		M16 × 2 mm	24	24	31	5	ISO Class 10	DIN 6331	5	000000000	00000
		M18 × 2.5 mm	27	27	34	5	ISO Class 10	DIN 6331	1	000000000	0000
		M20 × 2.5 mm	30	30	37	6	ISO Class 10	DIN 6331	1	000000000	0000
		M24 × 3 mm	36	36	45	6	ISO Class 10	DIN 6331	1	000000000	00000
		M30 × 3.5 mm	46	45	58	8	ISO Class 10	DIN 6331	1	000000000	00000
		M36 × 4 mm	55	54	68	10	ISO Class 10	DIN 6331	1	000000000	00000

Self-Aligning Flange Nuts

Clamp workpieces that aren't perfectly parallel to the mounting surface. Also known as spherical collar nuts, these have a curved base and washer that fit snugly together and swivel to compensate for slight misalignment. Nuts distribute pressure evenly as they tighten to prevent damage to the part.

Height includes the nut and the washer.

Steel

				Flange			Washer
	Thread Size	Wd.	Ht.	Dia.	Thk.	Max. Correction	Thk.	Material		Each
Black-Oxide Steel


		1/4"-20	1/2"	7/16"	5/8"	0.09"	2 1/2°	1/8"	Steel	000000000	00000
		5/16"-18	9/16"	17/32"	3/4"	0.13"	1 1/2°	5/32"	Steel	000000000	0000
		3/8"-16	11/16"	21/32"	7/8"	0.13"	1°	5/32"	Steel	000000000	0000
		1/2"-13	7/8"	7/8"	1 1/8"	0.19"	1°	3/16"	Steel	000000000	0000
		5/8"-11	1 1/16"	1 1/32"	1 3/8"	0.19"	1°	7/32"	Steel	000000000	0000
		3/4"-10	1 1/4"	1 17/64"	1 5/8"	0.25"	1 1/2°	17/64"	Steel	000000000	0000
		1"-8	1 5/8"	1 35/64"	2"	0.25"	1 1/2°	19/64"	Steel	000000000	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.

				Flange			Washer
	Thread Size	Wd.	Ht.	Dia.	Thk.	Max. Correction	Thk.	Material		Each
18-8 Stainless Steel


		1/4"-20	1/2"	7/16"	5/8"	0.09"	2 1/2°	1/8"	18-8 Stainless Steel	000000000	000000
		5/16"-18	9/16"	17/32"	3/4"	0.09"	1 1/2°	11/64"	18-8 Stainless Steel	000000000	00000
		3/8"-16	11/16"	21/32"	7/8"	0.13"	1°	11/64"	18-8 Stainless Steel	000000000	00000
		1/2"-13	7/8"	7/8"	1 1/8"	0.16"	1°	7/32"	18-8 Stainless Steel	000000000	00000
		5/8"-11	1 1/16"	1 1/32"	1 3/8"	0.19"	1°	7/32"	18-8 Stainless Steel	000000000	00000
		3/4"-10	1 1/4"	1 17/64"	1 5/8"	0.25"	1 1/2°	1/4"	18-8 Stainless Steel	000000000	00000

Rotating Flange Nuts

The head of these nuts rotates while the flange remains stationary, so you won't scratch the surface of finished parts as you tighten. They distribute pressure evenly across the mounting surface without the need for a separate washer. Also known as collar nuts.

Steel

Image of Product. Front orientation. Contains Annotated. Flange Nuts. Rotating Flange Nuts.

				Flange
	Thread Size	Wd.	Ht.	Dia.	Thk.	Material		Each
Black-Oxide Steel


		1/4"-20	1/2"	3/8"	5/8"	0.13"	Steel	000000000	00000
		1/4"-28	1/2"	3/8"	5/8"	0.13"	Steel	000000000	0000
		5/16"-18	9/16"	7/16"	3/4"	0.14"	Steel	000000000	0000
		5/16"-24	9/16"	7/16"	3/4"	0.14"	Steel	000000000	0000
		3/8"-16	11/16"	17/32"	7/8"	0.16"	Steel	000000000	0000
		3/8"-24	11/16"	17/32"	7/8"	0.16"	Steel	000000000	0000
		1/2"-13	7/8"	23/32"	1 1/8"	0.22"	Steel	000000000	0000
		1/2"-20	7/8"	23/32"	1 1/8"	0.22"	Steel	000000000	0000
		5/8"-11	1 1/16"	29/32"	1 3/8"	0.25"	Steel	000000000	0000
		5/8"-18	1 1/16"	29/32"	1 3/8"	0.25"	Steel	000000000	0000
		3/4"-10	1 1/4"	1 1/64"	1 5/8"	0.28"	Steel	000000000	00000
		3/4"-16	1 1/4"	1 1/64"	1 5/8"	0.28"	Steel	000000000	00000
		7/8"-9	1 7/16"	1 1/8"	1 3/4"	0.44"	Steel	000000000	00000
		7/8"-14	1 7/16"	1 1/8"	1 3/4"	0.44"	Steel	000000000	00000
		1"-8	1 5/8"	1 15/64"	2"	0.47"	Steel	000000000	00000
		1"-12	1 5/8"	1 15/64"	2"	0.47"	Steel	000000000	00000
		M6 × 1 mm	13 mm	9.5 mm	15.9 mm	3.2 mm	Steel	000000000	0000
		M8 × 1.25 mm	14 mm	11.1 mm	19 mm	3.6 mm	Steel	000000000	0000
		M10 × 1.5 mm	17 mm	13.5 mm	22.2 mm	5.6 mm	Steel	000000000	0000
		M12 × 1.75 mm	22 mm	18.3 mm	28.6 mm	5.6 mm	Steel	000000000	0000
		M16 × 2 mm	27 mm	23 mm	34.9 mm	6.4 mm	Steel	000000000	0000
		M20 × 2.5 mm	37 mm	28.6 mm	44.5 mm	11.1 mm	Steel	000000000	00000
		M24 × 3 mm	41 mm	31.3 mm	50.8 mm	11.9 mm	Steel	000000000	00000

Thread-Repairing Flange Nuts

Clean and reshape damaged threads while fastening parts together. Similar to a die, these nuts cut through rust, residue, and weld spatter as they screw on and off to ensure strong connections and prevent sticking during assembly. They have a flange that distributes pressure evenly across the mounting surface without the need for a separate washer. Also known as collar nuts.

High-Strength Steel

Image of Product. Bottom orientation. Flange Nuts. Thread-Repairing Flange Nuts.

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.

				Flange, mm
	Thread Size	Wd., mm	Ht., mm	Dia.	Thk.	Fastener Strength Grade/Class		Each
Zinc-Flake-Coated Steel


		M6 × 1 mm	10	6	14.2	1.1	ISO Class 10	000000000	00000
		M8 × 1.25 mm	13	8	17.9	1.2	ISO Class 10	000000000	0000
		M10 × 1.5 mm	16	10	21.8	1.5	ISO Class 10	000000000	0000
		M12 × 1.75 mm	18	12	26	1.8	ISO Class 10	000000000	0000