External Tooth, Spring, Crinkle, Full Washers, Form A
Steel, Fibre, TPE, Stainless Steel, Brass
7.99 mm, 15.5 mm, 12 mm, 6.9 mm, 11.88 mm
4.85 mm, 21 mm, 16.2 mm, 5.36 mm, 6.5 mm
1.8 mm, 8.1 mm, 0.5 mm, 3.5 mm, 0.28 mm
M3 (Form A), M3, M5, M5 (Form A), M2
BS 4320B, DIN 6798J, DIN 125A, DIN 7603A, BS 4463