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Grade 8 Lock Washer - Yellow Zinc

High Alloy Helical Spring Lock Washers, also known as Grade 8, are made from Alloy Steel.  They are designed for use with Grade 5 and Grade 8 Bolts.  Lock Washers are a hardened, coil shaped, split circular washer.  They are primarily used to apply greater bolt tension to the unit for which they are applied. They resist loosening caused by vibration and provide a uniform load distribution.

Bolt Size: Inside Diameter: Outside Diameter: Thickness
1/4" .252/.26 0.487 0.062
5/16" .314/.322 0.583 0.078
3/8" .377/.385 0.68 0.094
7/16" .440/.450 0.776 0.109
1/2" .502/.512 0.869 0.125
9/16" .564/.574 0.965 0.141
5/8" .628/.641 1.073 0.156
3/4" .753/.766 1.265 0.188
7/8" .878/.894 1.459 0.219
1" 1.003/1.024 1.656 0.25
1 1/4" 1.254/1.28 2.036 0.312
Country of Origin varies; Country of Origin is subject to change
If plating is important please send an inquiry


Length/Size Price/10 Qty
1/4'' $ 0.60
5/16" $ 0.70
3/8" $ 1.20
7/16" $ 1.50
1/2" $ 2.00
9/16" $ 3.30
5/8" $ 3.30
3/4" $ 4.90
7/8" $ 7.20
1" Per Each $ 0.88
1 1/4" Per Each $ 1.54
Length/Size Price/Pkg Qty Qty
1/4'' $ 4.00 100
5/16" $ 5.00 100
3/8" $ 8.00 100
7/16" $ 5.50 50
1/2" $ 7.00 50
9/16" $ 5.75 25
5/8" $ 5.75 25
3/4" $ 7.00 20
7/8" $ 7.50 15
1" $ 6.20 10
1 1/4" $ 10.70 10
Length/Size Price/Case Qty Qty