Used Where an Extra Wide Bearing Surface is Required; Originally Designed for Auto Body Repair Work, also Used in Sheet Metal, Plumbing and Electrical Work; Flat Washer with Significantly More Surface Area than a USS or SAE Washer; They Are also Made from a Thinner Gauge Metal than Most Flat Washers

Specifications:

Inner Diameter: 5/16 Inch
Outer Diameter: 1-1/2 Inch
Thickness: 0.047 to 0.08 Inch
Material: Steel
Finish: Zinc Plated