Internal Tooth, Cup, Crinkle, Full Washers, Form A
Fibre, Stainless Steel, TPE, Copper, Brass
4 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
5.3 mm, 5.36 mm, 2.25 mm, 4.36 mm, 6.5 mm
1.4 mm, 5.8 mm, 0.7 mm, 0.16 mm, 3.5 mm
M3 (Form A), M5 (Form A), M12, M3, M2
DIN 7980, DIN 7603A, DIN 6797J, BS 4320B, BS 4463