Lock Washers

Split lock washers provide greater bolt tensioning as far as tighter assemblies are concerned. Besides, they secure against loosening which results from vibration. Split lock washers are used with a standard washer to offer a uniform bearing surface. General use is what these washers are largely meant for.

Stock

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

Dimensions

Click table to show drawingLock Washer
Bolt Size A B C Weight (lbs.) Per 100 Pieces Part Numbers
Inside Diameter Max Outside Diameter Max Thickness Domestic Import
Min Plain Galvanized Plain Galvanized
12 0.512 0.869 0.125 1.3 11921 11922 11899 11900
58 0.641 1.073 0.156 2.4 11923 11924 11901 11902
34 0.766 1.265 0.188 4.3 11925 11926 11903 11904
78 0.894 1.459 0.219 6.0 11927 11928 11905 11906
1 1.024 1.656 0.250 8.8 11929 11930 11907 11908
118 1.153 1.847 0.281 12 11909 11910
114 1.280 2.036 0.312 16 11931 11932 11911 11912
138 1.408 2.219 0.344 21.9 11913 11914
112 1.534 2.419 0.375 28.2 11933 11934 11915 11916
134 1.789 2.679 0.389 30.35 11917 11918
2 2.039 2.936 0.422 32.50 11919 11920
214 2.293 3.221 0.440 39 17497 17498
212 2.543 3.471 0.440 45 19214 17499
234 2.793 3.824 0.458 50 17501 17502
3 3.043 4.074 0.458 56

Dimensions per ANSI B18.21.1 1999