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Lock Washer Drawing
Lock Washer Drawing Click to enlarge images

Lock Washers

Split lock washers provide greater bolt tensioning for tighter assemblies and provide protection against loosening resulting from vibration. Lock washers can be used with a standard washer to provide uniform bearing surface. These washers are intended for general use.

Stock

Diameters: 1/4- 3
Finish: Black and hot-dip galvanized

Dimensions

Bolt SizeABCWeight in Pounds
Per 100 Pieces
Inside Diameter
Max		Outside Diameter
Max		Thickness
Min
1/4 0.260 0.487 .062 .24
5/16 0.322 0.583 0.078 .40
3/8 0.385 0.680 0.094 .60
7/16 0.450 0.776 0.109 1
1/2 0.512 0.869 0.125 1.3
5/8 0.641 1.073 0.156 2.4
3/4 0.766 1.265 0.188 4.3
7/8 0.894 1.459 0.219 6.0
1 1.024 1.656 0.250 8.8
1-1/8 1.153 1.847 0.281 12
1-1/4 1.280 2.036 0.312 16
1-3/8 1.408 2.219 0.344 21.9
1-1/2 1.534 2.419 0.375 28.2
1-3/4 1.789 2.679 0.389 30.35
2 2.039 2.936 0.422 32.50
2-1/4 2.293 3.221 0.440 39
2-1/2 2.543 3.471 0.440 45
2-3/4 2.793 3.824 0.458 50
3 3.043 4.074 0.458 56

Dimensions per ANSI B18.21.1 1999