Steel - ANSI B18.22.1 - 1965 Rev. 1981. Type B plain washer is designed to distribute load pressures over large areas of primarily lower strength materials.
Technical Specs
ItemFlat Washer
Dimensional StandardsASME B18.22.1
Material Grade/ClassGrade 2
For Screw Size1/4 in
Outside Diameter1/2 in
System of MeasurementInch
ColourSilver
Outside Diameter Tolerance+/-0.010 in
Thickness Tolerance+0.005 in/-0.014 in
Flat Washer TypeStandard
MaterialSteel
FinishZinc-Plated
Inside Diameter0.281 in
Maximum Thickness0.071 in
Minimum Thickness0.056 in
Inside Diameter Tolerance+/-0.010 in
Rockwell HardnessB55
Country of OriginUnited States
(subject to change)