External Tooth, Internal Tooth, Plain Washer, Full Washers, Form A
Fibre, Ceramic, Stainless Steel, TPE, Steel
12.5 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, 2.25 mm, 6.5 mm
1.2 mm, 1.1 mm, 1.5 mm, 2.5 mm, 0.28 mm
M5 (Form A), M2, M3, M2.5, M5
ASME B18.8.1, BS 4320G, BS 4320B, DIN 7603A, ASME B18.21.1