McMaster-Carr logo
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    54 Products

    Tab Lock Washers

    Image of Product. Bottom orientation. Lock Washers. Tab-Lock Washer, 2 Tabs.

    2 Tabs

    Image of Product. Front orientation. Lock Washers. Tab-Lock Washer, 1 Tab.

    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.
    For Screw
    Size
    ID
    OD
    Thk.
    No. of
    Tabs
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    No. 10
    		0.204"0.625"0.036"2—1000000000000
    1/4"
    		0.281"0.75"0.036"2—100000000000
    5/16"
    		0.343"0.75"0.036"2—100000000000
    3/8"
    		0.406"0.875"0.062"2—100000000000
    7/16"
    		0.500"1.125"0.062"2—100000000000
    1/2"
    		0.531"1.125"0.062"2—100000000000
    9/16"
    		0.595"1.125"0.062"2—100000000000
    5/8"
    		0.656"1.25"0.062"2—1000000000000
    3/4"
    		0.781"1.5"0.062"2—1000000000000
    7/8"
    		0.910"1.75"0.062"2—1000000000000
    1"
    		1.031"2"0.094"2—1000000000000
    1 1/4"
    		1.281"2.5"0.125"2—1000000000000
    1 1/2"
    		1.531"3"0.125"2—1000000000000
    M4
    		4.3 mm14.0 mm0.4 mm1DIN 9310000000000000000
    M5
    		5.3 mm17.0 mm0.5 mm1DIN 935000000000000000
    M6
    		6.4 mm19.0 mm0.5 mm1DIN 935000000000000000
    M8
    		8.4 mm22.0 mm0.8 mm1DIN 93250000000000000
    M10
    		10.5 mm26.0 mm0.8 mm1DIN 932500000000000000
    M12
    		13.0 mm30.0 mm1.0 mm1DIN 93100000000000000
     
    Zinc-Plated Steel
    No. 10
    		0.204"0.625"0.036"2—100000000000
    1/4"
    		0.281"0.75"0.036"2—100000000000
    5/16"
    		0.343"0.75"0.036"2—100000000000
    3/8"
    		0.406"0.875"0.063"2—100000000000
    7/16"
    		0.500"1.125"0.062"2—100000000000
    1/2"
    		0.531"1.125"0.063"2—100000000000
    9/16"
    		0.595"1.125"0.062"2—100000000000
    5/8"
    		0.656"1.25"0.062"2—100000000000
    3/4"
    		0.781"1.5"0.063"2—100000000000
    7/8"
    		0.910"1.75"0.062"2—100000000000
    1"
    		1.031"2"0.094"2—100000000000
    1 1/4"
    		1.281"2.5"0.125"2—100000000000
    1 1/2"
    		1.531"3"0.125"2—100000000000
     

    Tabbed Strut Channel Washers

    Image of Product. Front orientation. Contains Inset. Strut Channel Framing and Fittings. 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"000000000000
    5/16"13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
    3/8"13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
    1/2"13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
    5/8"13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
    3/4"13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
    6 mm13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
    8 mm13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
    10 mm13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
    12 mm13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
     
    Galvanized Steel
    1/4"13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"000000000000
    3/8"13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"000000000000
    1/2"13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"000000000000
     
    304 Stainless Steel
    1/4"13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
    5/16"13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
    3/8"13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
    1/2"13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
    6 mm13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
    10 mm13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
    12 mm13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
     
    316 Stainless Steel
    3/8"13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
    1/2"13/16", 1 5/8", 2 7/16", 3 1/4"1 5/8"00000000000
     
    back to top