Tab Lock Spacers | McMaster-Carr

Filter by

System of Measurement

Screw Size

Material

Thickness

Finish

Length

Rod Diameter

Number of Tabs

Strut Channel Type

Strut Channel Framing Component

Overall Length

REACH

RoHS

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

Performance

DFARS Specialty Metals

Channel Height

Hardness

Tab Width

Specifications Met

Channel Width

54 Products

Tab Lock Washers

2 Tabs

1 Tab

Instead of relying on friction, these washers lock mechanically for more holding power than split and tooth lock washers. Bend the tabs with a wrench to stop both the fastener and washer from rotating. They are often used in applications with moderate vibration, such as motors, mixers, and pumps. These washers are not reusable because the tabs will weaken if you bend them repeatedly.

18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

2 Tabs—Also known as pantleg washers, these have two tabs for a more secure hold than washers with one tab. Bend one tab up against the flats of your nut or screw and the other tab down over the edge of your mounting surface.

1 Tab—Bend the tab down over the edge of your mounting surface, and bend the side of the washer up against the nut or screw.

	ID	OD	Thk.	No. of Tabs	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	No. 10	0.204"	0.625"	0.036"	2	—	1	7508N11	00000


	1/4"	0.281"	0.75"	0.036"	2	—	1	7508N13	0000
	5/16"	0.343"	0.75"	0.036"	2	—	1	7508N14	0000
	3/8"	0.406"	0.875"	0.062"	2	—	1	7508N15	0000
	7/16"	0.500"	1.125"	0.062"	2	—	1	7508N16	0000
	1/2"	0.531"	1.125"	0.062"	2	—	1	7508N17	0000
	9/16"	0.595"	1.125"	0.062"	2	—	1	7508N18	0000
	5/8"	0.656"	1.25"	0.062"	2	—	1	7508N19	00000
	3/4"	0.781"	1.5"	0.062"	2	—	1	7508N21	00000
	7/8"	0.910"	1.75"	0.062"	2	—	1	7508N22	00000
	1"	1.031"	2"	0.094"	2	—	1	7508N23	00000


	1 1/4"	1.281"	2.5"	0.125"	2	—	1	7508N24	00000
	1 1/2"	1.531"	3"	0.125"	2	—	1	7508N25	00000
	M4	4.3 mm	14.0 mm	0.4 mm	1	DIN 93	100	97471A141	00000
	M5	5.3 mm	17.0 mm	0.5 mm	1	DIN 93	50	97471A142	00000
	M6	6.4 mm	19.0 mm	0.5 mm	1	DIN 93	50	97471A143	00000
	M8	8.4 mm	22.0 mm	0.8 mm	1	DIN 93	25	97471A144	0000
	M10	10.5 mm	26.0 mm	0.8 mm	1	DIN 93	25	97471A145	00000
	M12	13.0 mm	30.0 mm	1.0 mm	1	DIN 93	10	97471A146	0000


	Zinc-Plated Steel



			No. 10	0.204"	0.625"	0.036"	2	—	1	2741N17	0000


			1/4"	0.281"	0.75"	0.036"	2	—	1	2741N11	0000
			5/16"	0.343"	0.75"	0.036"	2	—	1	2741N12	0000
			3/8"	0.406"	0.875"	0.063"	2	—	1	2741N13	0000
			7/16"	0.500"	1.125"	0.062"	2	—	1	2741N19	0000
			1/2"	0.531"	1.125"	0.063"	2	—	1	2741N14	0000
			9/16"	0.595"	1.125"	0.062"	2	—	1	2741N21	0000
			5/8"	0.656"	1.25"	0.062"	2	—	1	2741N15	0000
			3/4"	0.781"	1.5"	0.063"	2	—	1	2741N16	0000
			7/8"	0.910"	1.75"	0.062"	2	—	1	2741N22	0000
			1"	1.031"	2"	0.094"	2	—	1	2741N23	0000


			1 1/4"	1.281"	2.5"	0.125"	2	—	1	2741N24	0000
			1 1/2"	1.531"	3"	0.125"	2	—	1	2741N25	0000

Tabbed Strut Channel Washers

Tabs keep these washers aligned with the channel during and after installation. More stable than square washers, they stay put while you fasten them. Once in place, they’re less likely to rotate if structures vibrate.

Zinc-Plated Steel—Strong and durable with a zinc plating that protects from occasional exposure to moisture.

Galvanized Steel—An economical alternative to stainless steel, these withstand wet and outdoor environments. However, they won't hold up to salt water and chemicals.

304 Stainless Steel—The choice for wet and outdoor environments, these resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

316 Stainless Steel—Superior to 304 stainless steel, these won't degrade when exposed to harsh weather, salt water, and most chemicals.

		For Channel
	For Rod Dia.	Ht.	Wd.		Each
Zinc-Plated Steel



		1/4"	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T28	00000


		5/16"	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T11	0000
		3/8"	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T12	0000
		1/2"	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T13	0000
		5/8"	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T35	0000
		3/4"	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T31	0000
		6 mm	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T22	0000
		8 mm	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T32	0000
		10 mm	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T23	0000
		12 mm	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T24	0000


		Galvanized Steel



				1/4"	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T101	0000


				3/8"	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T102	0000
				1/2"	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T103	0000


				304 Stainless Steel



						1/4"	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T21	0000


						5/16"	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T29	0000
						3/8"	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T14	0000
						1/2"	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T15	0000
						6 mm	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T25	0000
						10 mm	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T26	0000
						12 mm	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T27	0000


						316 Stainless Steel



								3/8"	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T33	0000


								1/2"	13/16", 1 5/8", 2 7/16", 3 1/4"	1 5/8"	3585T34	0000