Zinc-Alloy Wing Nuts | McMaster-Carr

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40 Products

Flanged Wing Nuts

The wings give you extra leverage for a tight fit, while the flange distributes pressure evenly across the mounting surface without the need for a separate washer. These nuts are often used to secure screws in oversized or irregularly shaped holes since the flange covers a larger area than standard nuts. They are the easiest nuts to twist on and off, so they are ideal for fastening parts that need to be frequently disassembled, such as access panels and covers.

Zinc Alloy

Zinc—Zinc alloy nuts have better corrosion resistance than steel to withstand occasional exposure to moisture. However, they're not as strong.

Black Zinc—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They have better corrosion resistance than steel to withstand occasional exposure to moisture, however, they're not as strong.

	Wd.	Ht.	Pkg. Qty.		Pkg.
Zinc



	6-32	3/4"	23/64"	10	92239A102	00000


	8-32	3/4"	23/64"	10	92239A310	0000
	8-32	7/8"	7/16"	25	92239A100	00000
	10-24	7/8"	7/16"	25	92239A125	00000
	10-32	3/4"	25/64"	10	92239A320	0000
	10-32	7/8"	7/16"	25	92239A150	00000
	1/4"-20	1"	1/2"	25	92239A175	00000
	1/4"-20	1 1/8"	37/64"	25	92239A200	00000
	5/16"-18	1"	1/2"	10	92239A430	0000
	5/16"-18	1 1/8"	37/64"	25	92239A225	00000
	3/8"-16	1 1/8"	37/64"	25	92239A250	00000


	Black Zinc



			6-32	3/4"	23/64"	10	92239A330	00000


			8-32	3/4"	23/64"	10	92239A340	00000
			10-24	7/8"	29/64"	10	92239A350	00000
			10-32	3/4"	23/64"	10	92239A360	00000
			10-32	7/8"	29/64"	10	92239A370	00000
			1/4"-20	1"	1/2"	5	92239A380	00000
			1/4"-20	1 1/4"	37/64"	5	92239A390	00000
			5/16"-18	1"	1/2"	5	92239A400	00000
			5/16"-18	1 1/4"	37/64"	5	92239A410	00000
			3/8"-16	1 1/4"	37/64"	5	92239A420	00000

Nylon-Insert Wing Nuts

The strongest hold of all our thumb nuts. The wings give you extra leverage for a tight fit, while a nylon insert grips the screw to prevent loosening from vibration. However, the insert may become brittle if exposed to high temperatures. You can reuse these nuts a handful of times, but their holding power will decrease with each use.

Zinc Alloy

Zinc—Zinc alloy nuts have better corrosion resistance than steel to withstand occasional exposure to moisture. However, they're not as strong.

	Wd.	Ht.	Base Dia.	Insert Max. Temp., ° F	Pkg. Qty.		Pkg.
Zinc



	8-32	1 1/32"	1/2"	3/8"	225	10	98520A102	000000


	10-24	1 1/32"	1/2"	3/8"	225	25	98520A101	00000
	10-32	1 1/32"	1/2"	3/8"	225	25	98520A111	00000
	1/4"-20	1 1/4"	19/32"	7/16"	225	20	98520A119	00000
	1/4"-28	1 1/4"	19/32"	7/16"	225	20	98520A129	00000
	5/16"-18	1 1/2"	23/32"	9/16"	225	10	98520A140	00000
	5/16"-24	1 1/2"	23/32"	9/16"	225	10	98520A130	00000
	3/8"-16	1 1/2"	23/32"	9/16"	225	10	98520A145	00000

Wing Nuts


Style 2	Style 3

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.

Zinc Alloy

Zinc—Zinc alloy nuts have better corrosion resistance than steel to withstand occasional exposure to moisture. However, they're not as strong.

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







				Style 2

				8-32	7/8"	3/8"	27/64"	5	99862A410	00000	00000	00000


				10-24	7/8"	3/8"	27/64"	5	99862A420	0000	0000	0000
				1/4"-20	1"	1/2"	31/64"	5	99862A350	0000	0000	0000
				1/4"-20	1 1/8"	7/8"	15/32"	5	99862A510	0000	0000	0000
				1/4"-20	1 1/4"	5/8"	9/16"	5	99862A440	0000	0000	0000
				5/16"-18	1 1/4"	5/8"	9/16"	5	99862A450	0000	0000	0000
				5/16"-18	1 1/4"	1"	1/2"	5	99862A520	0000	0000	0000
				3/8"-16	1 3/8"	3/4"	11/16"	5	99862A530	0000	0000	0000




						Style 3

						10-24	3/4"	3/8"	5/16"	5	99862A210	0000	0000	0000


						10-32	7/8"	3/8"	3/8"	5	99862A220	0000	0000	0000
						1/4"-20	1"	1/2"	3/8"	5	99862A230	0000	0000	0000