Countersunk Washer, Internal Tooth, External Tooth, Full Washers, Form A
Ceramic, Stainless Steel, TPE, Steel, Copper
9.09 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
4.85 mm, 2.1 mm, 5.36 mm, 17 mm, 6.5 mm
3.5 mm, 0.28 mm, 0.6 mm, 1.6 mm, 0.4 mm
M20, M3 (Form A), M6, M5 (Form A), M2.5
DIN 7980, DIN 6797A, BS 4320B, DIN 7603, ASME B18.8.1