Steel Finger Nuts | McMaster-Carr

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116 Products

Thumb Nut Grip Type

Knurled Head

Get a good grip, even with oily fingers

18 products

Wing

Give you more leverage than knurled-head nuts for a tighter fit

98 products

Thumb Nut Grip Type

Hex Head

Twist on by hand, then crank with a wrench for an extra-tight fit

0 products

Environment

Sanitary

Free of crevices where bacteria can grow

0 products

Low-Profile Knurled-Head Thumb Nuts

Twist these thumb nuts into spaces without a lot of clearance. They have a short, slip-resistant head, so you can grip them easily and make controlled adjustments in cramped spots. You can also use them as jam nuts by threading them against another nut to hold it in place.

Steel

Black-Oxide Steel—A dark, matte coating creates a finished look. These nuts offer minimal corrosion resistance, so they're best for dry environments.

		Collar
	Thread Size	Dia.	Ht.	Head Dia.	Ht.	Specs. Met	Pkg. Qty.		Pkg.
Black-Oxide Steel



		10-32	1/2"	1/16"	3/4"	7/32"	—	1	92815A111	00000


		1/4"-20	1/2"	1/16"	3/4"	7/32"	—	1	92815A115	0000
		5/16"-18	1/2"	1/16"	3/4"	5/16"	—	1	92815A119	0000
		3/8"-16	1/2"	1/16"	3/4"	5/16"	—	1	92815A123	0000
		1/2"-13	3/4"	1/8"	1"	3/8"	—	1	92815A127	0000
		5/8"-11	3/4"	1/8"	1"	3/8"	—	1	92815A131	0000
		M4 × 0.7 mm	8 mm	0.5 mm	16 mm	4 mm	DIN 467	1	92815A201	0000
		M5 × 0.8 mm	10 mm	1 mm	20 mm	5 mm	DIN 467	1	92815A202	0000
		M6 × 1 mm	12 mm	1 mm	24 mm	6 mm	DIN 467	1	92815A203	0000
		M8 × 1.25 mm	16 mm	2 mm	30 mm	8 mm	DIN 467	1	92815A204	0000
		M10 × 1.5 mm	20 mm	2 mm	36 mm	10 mm	DIN 467	1	92815A205	0000


		M12 × 1.75 mm	20 mm	2 mm	36 mm	10 mm	DIN 467	1	92815A206	0000

Wing Nuts


Style 1	Style 4	Style 5	Style 6

Style 7	Style 8	Style 9

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


Style 1	Style 4	Style 5	Style 6

Style 7	Style 8	Style 9

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.

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

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







				Style 1

				4-40	3/4"	3/8"	21/64"	—	—	25	90866A005	000000	000000	000000


				6-32	5/8"	3/8"	19/64"	—	—	100	90866A007	00000	00000	00000
				8-32	7/8"	1/2"	13/32"	—	—	100	90866A009	00000	00000	00000
				10-24	7/8"	1/2"	13/32"	—	—	100	90866A011	00000	00000	00000
				10-32	7/8"	1/2"	13/32"	—	—	100	90866A111	00000	00000	00000
				12-24	1 1/8"	1/2"	31/64"	—	—	25	90866A116	00000	00000	0000
				1/4"-20	1 1/8"	1/2"	31/64"	—	—	100	90866A029	00000	00000	00000
				1/4"-28	1 1/8"	1/2"	31/64"	—	—	100	90866A129	00000	00000	00000
				5/16"-18	1 1/4"	5/8"	9/16"	—	—	100	90866A030	00000	00000	00000
				5/16"-24	1 1/4"	5/8"	9/16"	—	—	25	90866A130	00000	00000	00000
				3/8"-16	1 3/8"	3/4"	11/16"	—	—	50	90866A140	00000	00000	00000


				3/8"-24	1 1/2"	3/4"	45/64"	—	—	10	90866A145	00000	00000	0000
				7/16"-14	1 7/8"	7/8"	7/8"	—	—	25	90866A150	00000	00000	00000
				7/16"-20	2"	1"	15/16"	—	—	5	90866A155	00000	00000	00000
				1/2"-13	1 7/8"	7/8"	7/8"	—	—	25	90866A160	00000	00000	00000
				1/2"-20	2"	1"	15/16"	—	—	5	90866A165	00000	00000	00000
				5/8"-11	2 3/4"	1 3/8"	1 5/32"	—	—	5	90866A170	00000	00000	00000
				3/4"-10	2 3/4"	1 3/8"	1 5/32"	—	—	5	90866A180	00000	00000	00000
				M3 × 0.5 mm	19.5 mm	10 mm	8 mm	Class 5	—	25	94300A120	0000	0000	0000
				M4 × 0.7 mm	17.6 mm	8.6 mm	8 mm	Class 5	—	50	94300A310	0000	0000	0000
				M5 × 0.8 mm	22.5 mm	11 mm	10.3 mm	Class 5	—	25	94300A320	0000	0000	0000


				M6 × 1 mm	27.8 mm	13.6 mm	12.7 mm	Class 5	—	25	94300A330	0000	0000	0000
				M8 × 1.25 mm	30.3 mm	14.8 mm	13.8 mm	Class 5	—	20	94300A340	0000	0000	0000
				M10 × 1.5 mm	36.2 mm	17.7 mm	16.5 mm	Class 5	—	10	94300A350	0000	0000	0000
				M12 × 1.75 mm	49.4 mm	24.1 mm	22.5 mm	Class 5	—	5	94300A360	0000	0000	0000




						Style 4

						M4 × 0.7 mm	20 mm	10.5 mm	8 mm	Class 5	DIN 315	10	94300A411	0000	0000	0000


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




								Style 5

								1/4"-20	1 3/8"	5/8"	1/2"	—	—	5	90876A560	00000	00000	00000


1/2"-13								2 1/4"	1"	13/16"	—	—	1	90876A228	0000	0000	0000
M6 × 1 mm	34.9 mm							15.9 mm	12.7 mm	—	—	5	94309A150	00000	00000	00000
M8 × 1.25 mm	36.5 mm							17.5 mm	12.7 mm	—	—	5	94309A155	00000	00000	00000
M16 × 2 mm	69.9 mm							30.2 mm	26.99 mm	—	—	1	94309A170	00000	00000	0000




		Style 6

		6-32	3/4"					3/8"	13/32"	—	—	100	94225A300	0000	0000	0000


		8-32	3/4"					3/8"	13/32"	—	—	100	94225A310	0000	0000	0000
		10-24	7/8"					1/2"	33/64"	—	—	50	94225A320	0000	0000	0000
		10-32	7/8"					1/2"	33/64"	—	—	50	94225A330	0000	0000	0000
		1/4"-20	1 1/8"					1/2"	39/64"	—	—	50	94225A340	0000	0000	0000
		3/8"-16	1 3/8"					5/8"	53/64"	—	—	50	94225A360	00000	00000	0000




								Style 7

								1/4"-20	1"	1/2"	3/4"	—	—	5	90876A650	00000	00000	00000


								1/4"-20	1 1/8"	3/4"	5/8"	—	—	5	90876A600	00000	00000	00000
								1/4"-20	1 1/2"	5/8"	7/8"	—	—	5	90876A655	00000	00000	00000
								5/16"-18	1 1/2"	5/8"	7/8"	—	—	5	90876A660	00000	00000	00000
								5/16"-18	1 5/8"	1"	7/8"	—	—	5	90876A605	00000	00000	00000
								3/8"-16	1 5/8"	1"	7/8"	—	—	5	90876A610	00000	00000	00000
								M6 × 1 mm	25.4 mm	11.9 mm	19.05 mm	—	—	5	94309A350	00000	00000	00000
								M6 × 1 mm	27 mm	17.5 mm	16 mm	—	—	5	94309A250	00000	00000	00000
								M6 × 1 mm	38.1 mm	14.3 mm	22.22 mm	—	—	1	94309A355	0000	0000	0000
								M8 × 1.25 mm	38.1 mm	14.3 mm	22.22 mm	—	—	1	94309A360	0000	0000	0000
								M8 × 1.25 mm	41.3 mm	25.4 mm	22.23 mm	—	—	5	94309A255	00000	00000	00000


								M10 × 1.5 mm	41.3 mm	25.4 mm	22.23 mm	—	—	1	94309A260	0000	0000	0000




					Style 8

					M8 × 1.25 mm				76.2 mm	19.1 mm	24.5 mm	—	—	1	94309A412	0000	0000	0000


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


					Black Corrosion-Resistant-Coated Steel







							Style 1

							6-32				3/4"	3/8"	23/64"	—	—	5	98671A110	0000	0000	0000


							8-32				7/8"	1/2"	13/32"	—	—	5	98671A130	0000	0000	0000
							10-24				7/8"	1/2"	13/32"	—	—	5	98671A150	0000	0000	0000
							10-32				7/8"	1/2"	13/32"	—	—	5	98671A190	0000	0000	0000
							1/4"-20				1 1/8"	5/8"	15/32"	—	—	5	98671A210	0000	0000	0000
5/16"-18							1 1/4"				5/8"	9/16"	—	—	5	98671A230	0000	0000	0000
3/8"-16	1 1/2"						3/4"				5/8"	—	—	5	98671A250	0000	0000	0000


Steel







												Style 4

												8-32	1"	1/2"	1/4"	—	—	1	90876A140	0000	0000	0000


		1/4"-20	1 1/8"									5/8"	7/16"	—	—	5	90876A350	00000	00000	00000
		5/16"-18	1 3/8"									5/8"	15/32"	—	—	5	90876A355	00000	00000	00000
		5/16"-18	1 1/2"									3/4"	5/8"	—	—	5	90876A315	00000	00000	00000
		3/8"-16	1 5/8"									7/8"	11/16"	—	—	5	90876A320	00000	00000	00000
		5/8"-11	2 1/2"									1 1/4"	1 1/16"	—	—	1	90876A331	0000	0000	0000




												Style 5

												10-24	1"	7/16"	1/4"	—	—	5	90876A146	00000	00000	00000


												1/4"-20	1 3/8"	5/8"	1/2"	—	—	5	90876A150	00000	00000	00000
												5/16"-18	1 1/2"	3/4"	1/2"	—	—	5	90876A155	00000	00000	00000
												3/8"-16	1 5/8"	7/8"	5/8"	—	—	5	90876A160	00000	00000	00000
												1/2"-13	2 1/4"	1"	13/16"	—	—	1	90876A126	0000	0000	0000
												5/8"-11	2 3/4"	1 1/4"	1 1/16"	—	—	1	90876A170	0000	0000	0000
												3/4"-10	3"	1 1/4"	1 1/4"	—	—	1	90876A175	0000	0000	0000




												Style 7

												1/4"-20	1"	1/2"	3/4"	—	—	5	90876A335	00000	00000	00000


												1/4"-20	1 1/8"	3/4"	5/8"	—	—	5	90876A180	00000	00000	00000
												1/4"-20	1 1/2"	5/8"	7/8"	—	—	5	90876A340	00000	00000	00000
												5/16"-18	1 1/2"	5/8"	7/8"	—	—	5	90876A345	00000	00000	00000
					5/16"-18							1 5/8"	1"	7/8"	—	—	5	90876A185	00000	00000	00000
					3/8"-16							1 5/8"	1"	7/8"	—	—	5	90876A190	00000	00000	00000




						Style 8

						3/8"-16				3"		3/4"	1"	—	—	1	90876A445	0000	0000	0000


						1/2"-13				3"		3/4"	1"	—	—	1	90876A450	0000	0000	0000
						M8 × 1.25 mm				76.2 mm		19.1 mm	24.5 mm	—	—	1	94309A441	0000	0000	0000
						M10 × 1.5 mm				76.2 mm		19.1 mm	24.5 mm	—	—	1	94309A442	0000	0000	0000
						M12 × 1.75 mm				76.2 mm		19.1 mm	24.5 mm	—	—	1	94309A443	0000	0000	0000




												Style 9

1/4"-20	1 7/8"											1 3/8"	11/16"	—	—	1	90876A370	0000	0000	0000


5/16"-18	1 7/8"											1 3/8"	11/16"	—	—	1	90876A375	0000	0000	0000
3/8"-16	1 7/8"											1 3/8"	11/16"	—	—	1	90876A380	0000	0000	0000

High-Torque Low-Profile Knurled-Head Thumb Nuts

Twist the slip-resistant head by hand, then insert a T-handle hex key into one of the holes to apply extra torque for a tight fit. Nuts have a low-profile head that fits into cramped spaces. You can also use them as jam nuts by threading them against another nut to hold it in place.

Steel

Black-Oxide Steel—A dark, matte coating creates a finished look. These nuts offer minimal corrosion resistance, so they're best for dry environments.

	Head Dia.	Ht.	No. of Holes	Hole Dia.		Each
Black-Oxide Steel



	10-24	3/4"	1/4"	4	3/32"	94775A021	00000


	1/4"-20	7/8"	1/4"	4	3/32"	94775A029	0000
	5/16"-18	1"	3/8"	4	3/16"	94775A030	0000
	3/8"-16	1"	3/8"	4	3/16"	94775A031	0000
	1/2"-13	1 1/8"	7/16"	4	7/32"	94775A033	0000
	5/8"-11	1 3/8"	1/2"	4	1/4"	94775A035	0000

Heavy Duty Wing Nuts

These rugged nuts have a taller base than other wing nuts with more threads to engage for a better hold. They also have a thicker body so they won’t weaken under high stress. Strong enough for use on tanker trucks, they are designed for large, heavy assemblies that need to be opened and closed often. The wings give you more leverage than knurled-head nuts, so you can apply greater torque and achieve a tighter fit.

Steel

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

	Wd.	Ht.	Base Dia.	Pkg. Qty.		Pkg.
Steel



	3/8"-16	3 1/2"	1 1/2"	1 1/4"	1	92902A150	000000


	1/2"-13	3 1/2"	1 1/2"	1 1/4"	1	92902A275	00000
	5/8"-11	3 1/2"	1 1/2"	1 1/4"	1	92902A400	00000
	3/4"-10	3 1/2"	1 1/2"	1 1/4"	1	92902A525	00000

Wing Nut Assortments

With a range of sizes on hand, you can use these assortments to fasten a variety of machinery and equipment. Wing nuts are the easiest nuts to twist on and off by hand, so they 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 to apply greater torque and achieve a tighter fit.

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

	No. of Pieces	Container Type		Each
Zinc-Plated Steel



	6-32, 8-32, 10-24, 1/4"-20, 5/16"-18, 3/8"-16	175	Plastic Box	98191A416	000000

Finish-Your-Own Wing Nuts

Tap your own threads to create a custom wing nut. 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—Best for dry environments since moisture will cause these nuts to rust.

	Each







Steel

3 1/2"	1 1/2"	1 1/4"	92902A650	000000