Mil Spec Washer Military Specification 18-8 Stainless Steel Finish Plain Fits Bolt Sizes #4 Inside Dia 0.125 In. Outside Dia 0.312 In. Thickness 0.002 to 0.042 In. Thickness Tolerance - Slot Width - Radius - Temp (F) - Color - Rockwell Hardness B70 Brinell Hardness - Vickers Hardness - - For Use With Screws and Studs Meets/Exceeds AN960 Includes - Package Weight 0.05 Approx Pkg Qty - Package Quantity 100