External Tooth, Crinkle, Lock Washer, Full Washers, Form A
Fibre, Brass, Steel, Stainless Steel, TPE
3/4" X 3" X 1/4", 7.99 mm, 15.5 mm, 6.9 mm, 11.88 mm
21 mm, 3.2 mm, 5 mm, 4.36 mm, 6.5 mm
8.1 mm, 1.2 mm, 1.1 mm, 2.5 mm, 0.16 mm
M2, M12, M5 (Form A), M20, M10
BS 4320:1968, BS 4463, BS 4320, ASME B18.8.1, DIN 7603A