Standard Flat Washers

Washers offer a smooth bearing surface. They are typically used at the base of the head of a bolt/nut. These washers are unhardened & are meant for general use. Flat washers come under ASTM specification F844.

Stock

Diameters: 1/2″ – 3″

Origin: Domestic

Finish: Plain and hot-dip galvanized

Dimensions

Click table to show drawingStandard Flat Washer
Bolt SizeABCWeight (lbs.) Per 100 PiecesPart numbers
Inside DiameterOutside DiameterThicknessDomesticImport
PlainGalvanizedPlainGalvanized
129161380.109416408164091979419795
5811161340.134816410164111979619797
34131620.1481116412164131979819799
7815162140.1651516414164151980019801
111162120.1651916416164171980219803
1181142340.1652216418164191980419805
11413830.1652616420164211980619807
1381123140.1803316422164231980819809
1121583120.1803816424164251981019811
1581343340.180431642616427
13417840.1805016428164291981219813
17824140.180571643016431
22184120.1806316432164331981419815
2142384340.220831643416435
21225850.238961643616437
2342785140.2591101667016671
33185120.2841301643816439

Dimensions per ASME B18.21.1