Internal Tooth, Plain Washer, Lock Washer, Full Washers, Form A
Steel, Brass, Fibre, TPE, Stainless Steel
4 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
2.1 mm, 13 mm, 16.2 mm, 2.25 mm, 6.5 mm
0.28 mm, 0.6 mm, 8.1 mm, 2.5 mm, 1.6 mm
M2, M5 (Form A), M12, M2.5, M3
ASME B18.22.1
ASTM F844, ASME B18.21.1, DIN 7603A, BS 4320B, DIN 7980