Metric Butterfly Nuts | McMaster-Carr

Filter by

System of Measurement

Thread Type

Thread Size

Material

Nut Type

Thread Pitch

Wing Nut Profile

Base Diameter

Finish

Color

Thread Fit

Performance

Super Corrosion Resistant

Thread Spacing

REACH

RoHS

DFARS Specialty Metals

Exempt

Not Compliant

Export Control Classification Number (ECCN)

EAR99

Forward

How can we improve?

57 Products

Wing Nuts


Style 1	Style 4	Style 5	Style 7	Style 8

The easiest nuts to twist on and off by hand, these are commonly used to fasten parts that need to be frequently disassembled, such as access panels and covers. The wings give you more leverage than knurled-head nuts, so you can apply greater torque and achieve a tighter fit.

Steel

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.

									Pkg.
	Thread Size	Wd., mm	Ht., mm	Base Dia., mm	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		1-9	10-49	50-Up
Zinc-Plated Steel





				Style 1

				M3 × 0.5 mm	19.5	10	8	ISO Class 5	—	25	94300A120	00000	00000	00000
				M4 × 0.7 mm	17.6	8.6	8	ISO Class 5	DIN 315	50	94300A310	00000	0000	0000
				M5 × 0.8 mm	22.5	11	10.3	ISO Class 5	DIN 315	25	94300A320	0000	0000	0000
				M6 × 1 mm	27.8	13.6	12.7	ISO Class 5	DIN 315	25	94300A330	0000	0000	0000
				M8 × 1.25 mm	30.3	14.8	13.8	ISO Class 5	DIN 315	20	94300A340	0000	0000	0000
				M10 × 1.5 mm	36.2	17.7	16.5	ISO Class 5	DIN 315	10	94300A350	0000	0000	0000
				M12 × 1.75 mm	49.4	24.1	22.5	ISO Class 5	DIN 315	5	94300A360	0000	0000	0000




						Style 4

						M4 × 0.7 mm	20	10.5	8	ISO Class 5	DIN 315	10	94300A411	0000	0000	0000
						M5 × 0.8 mm	26	13	11	ISO Class 5	DIN 315	10	94300A412	0000	0000	0000
						M6 × 1 mm	33	17	13	ISO Class 5	DIN 315	10	94300A413	00000	0000	0000
						M8 × 1.25 mm	39	20	16	ISO Class 5	DIN 315	5	94300A414	0000	0000	0000
						M10 × 1.5 mm	51	25	20	ISO Class 5	DIN 315	5	94300A415	00000	0000	0000
						M12 × 1.75 mm	65	33.5	23	ISO Class 5	DIN 315	1	94300A416	0000	0000	0000
						M16 × 2 mm	73	37.5	29	ISO Class 5	DIN 315	1	94300A417	0000	0000	0000




								Style 5

								M6 × 1 mm	34.9	15.9	12.7	—	—	5	94309A150	00000	00000	00000
								M8 × 1.25 mm	36.5	17.5	12.7	—	—	5	94309A155	00000	00000	00000
								M16 × 2 mm	69.9	30.2	26.99	—	—	1	94309A170	00000	0000	0000




										Style 7

										M6 × 1 mm	25.4	11.9	19.05	—	—	5	94309A350	00000	00000	00000
										M6 × 1 mm	27	17.5	16	—	—	5	94309A250	00000	00000	00000
										M6 × 1 mm	38.1	14.3	22.22	—	—	1	94309A355	0000	0000	0000
										M8 × 1.25 mm	38.1	14.3	22.22	—	—	1	94309A360	0000	0000	0000
										M8 × 1.25 mm	41.3	25.4	22.23	—	—	5	94309A255	00000	00000	00000
										M10 × 1.5 mm	41.3	25.4	22.23	—	—	1	94309A260	0000	0000	0000




												Style 8

												M8 × 1.25 mm	76.2	19.1	24.5	—	—	1	94309A412	0000	0000	0000
												M10 × 1.5 mm	76.2	19.1	24.5	—	—	1	94309A413	0000	0000	0000
												M12 × 1.75 mm	76.2	19.1	24.5	—	—	1	94309A414	0000	0000	0000


												Steel





	Style 8

	M8 × 1.25 mm														76.2	19.1	24.5	—	—	1	94309A441	0000	0000	0000
	M10 × 1.5 mm	76.2													19.1	24.5	—	—	1	94309A442	0000	0000	0000
	M12 × 1.75 mm	76.2	19.1												24.5	—	—	1	94309A443	0000	0000	0000

Iron

Style 5

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

							Pkg.
	Thread Size	Wd., mm	Ht., mm	Base Dia., mm	Pkg. Qty.		1-9	10-49	50-Up
Zinc-Plated Iron





				Style 5

				M5 × 0.8 mm	28.6	12.7	9.53	5	94309A145	000000	000000	000000
				M10 × 1.5 mm	41.3	20.6	16	1	94309A160	0000	0000	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 thumb nuts, these hold up in just about any environment. They won't degrade from exposure to weather, salt water, and most chemicals.

								Pkg.
	Thread Size	Wd., mm	Ht., mm	Base Dia., mm	Specs. Met	Pkg. Qty.		1-9	10-49	50-Up
18-8 Stainless Steel





				Style 1

				M3 × 0.5 mm	19.5	10	8	—	25	94545A210	000000	000000	00000
				M4 × 0.7 mm	21.5	10.3	9	DIN 315	10	94545A220	0000	0000	0000
				M5 × 0.8 mm	21.5	10.3	10.5	DIN 315	10	94545A225	0000	0000	0000
				M6 × 1 mm	26.3	12.7	13	DIN 315	10	94545A230	0000	0000	0000
				M8 × 1.25 mm	30.1	15.1	15.25	DIN 315	10	94545A235	0000	0000	0000
				M10 × 1.5 mm	34.9	18.3	18	DIN 315	5	94545A240	0000	0000	0000
				M12 × 1.75 mm	47.6	23.8	23	DIN 315	1	94545A245	0000	0000	0000
				M14 × 2 mm	58.3	28.5	26.6	DIN 315	1	94545A250	0000	0000	0000
				M16 × 2 mm	58.3	28.5	26.6	DIN 315	1	94545A255	00000	00000	00000
				M18 × 2.5 mm	68.5	33.8	29.5	DIN 315	1	94545A260	00000	00000	00000


				M20 × 2.5 mm	68.5	33.8	29.5	DIN 315	1	94545A265	00000	00000	00000


				Super-Corrosion-Resistant 316 Stainless Steel





								Style 1

								M3 × 0.5 mm	19.5	10	8	—	10	94543A320	00000	00000	00000
								M4 × 0.7 mm	19.5	10	8	—	10	94543A340	00000	00000	00000
								M5 × 0.8 mm	23	12	10.3	—	10	94543A360	00000	00000	00000
								M6 × 1 mm	26.3	12.7	13	DIN 315	5	94543A420	0000	0000	0000
								M8 × 1.25 mm	30.1	15.1	15.25	DIN 315	5	94543A440	00000	0000	0000
								M10 × 1.5 mm	34.93	18.3	18	DIN 315	1	94543A460	0000	0000	0000
								M12 × 1.75 mm	49.4	22.3	22.5	DIN 315	—	94543A520	0000	0000	0000
								M14 × 2 mm	52.7	30.8	26	DIN 315	—	94543A540	00000	00000	00000
								M16 × 2 mm	58.3	30.8	26.6	DIN 315	—	94543A560	00000	00000	00000

Plastic

Style 1

Nylon 6/6—These nuts thread on smoothly and resist abrasion to stand up to scratches and bumps. Nylon will swell and weaken when exposed to moisture, so it's best for dry environments.

								Pkg.
	Thread Size	Wd., mm	Ht., mm	Base Dia., mm	Choose a Color	Pkg. Qty.		1-9	10-49	50-Up
Nylon 6/6





				Style 1

				M4 × 0.7 mm	22.8	12.2	10.2	Black , Off-White	50	92124A510	00000	00000	00000
				M5 × 0.8 mm	22.8	12.2	10.2	Black , Off-White	50	92124A520	0000	0000	0000
				M6 × 1 mm	27.7	16	14.2	Black , Off-White	50	92124A530	00000	00000	0000
				M8 × 1.25 mm	34.8	18.3	16.2	Black , Off-White	50	92124A540	00000	00000	0000
				M10 × 1.5 mm	34.8	18.3	16.2	Black , Off-White	50	92124A550	00000	00000	0000
				M12 × 1.75 mm	42.2	22.7	21.4	Black , Off-White	25	92124A560	0000	0000	0000