Flat Washer, For Screw Size 3 1/2" ,Steel Black Oxide Finish

Large O.D. Oversized Washer, Flat Washer Type Oversized, Dimensional Standards AMPG 2001 FL.04, Material Steel, Material Grade/Class Through Hardened, Finish Black Oxide, For Screw Size 3 1/2 in, Inside Diameter 3.625 in, Outside Diameter 6 1/2 in, Maximum Thickness 5/16 in, System of Measurement Inch, Minimum Thickness 5/16 in, Color Black, Inside Diameter Tolerance +/-0.010 in, Material Quality Standards ASTM A108, Outside Diameter Tolerance +/-0.010 in, Pack Size Small Pack