External Tooth, Crinkle, Nylon Washers, Full Washers, Form A
Steel, Stainless Steel, TPE, Nylon, Copper
30 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
2.1 mm, 3.2 mm, 5.36 mm, 4.36 mm, 6.5 mm
5.8 mm, 0.7 mm, 8.1 mm, 0.5 mm, 0.28 mm
M3 (Form A), M20, M12, M16, M5 (Form A)
ASME B18.22.1 ASTM
F844, ASTM F436, ASME B18.8.1, DIN 7603A, BS 4320B