Image Part NO. Manufacturer Description Part StatusTypeThread/Screw/Hole SizeDiameter - InsideDiameter - OutsideThicknessPlatingMaterial
3120 Keystone Electronics WASHER FLAT 6 FIBRE ActiveFlat#60.140" (3.56mm)0.313" (7.95mm) 5/16"0.032" (0.81mm)-Fibre
3206 Keystone Electronics WASHER FLAT 8 NYLON ActiveFlat#80.171" (4.34mm)0.438" (11.13mm) 7/16"0.062" (1.57mm) 1/16"-Nylon
3171 Keystone Electronics WASHER FLAT 10 FIBRE ActiveFlat#100.196" (4.98mm)0.375" (9.53mm) 3/8"0.047" (1.19mm) 3/64"-Fibre
75107 APM Hexseal WASHER SEALING 5/16 STN STEEL ActiveSealing5/16"0.313" (7.95mm) 5/16"1.000" (25.40mm) 1"0.078" (1.98mm)-Stainless Steel