Internal Tooth, Lock Washer, Flat Washers, Full Washers, Form A
Ceramic, A2/304 Stainless Steel, Fibre, Brass, TPE
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
25 mm, 6.4 mm, 2.25 mm, 13 mm, 6.5 mm
5.8 mm, 0.7 mm, 1.2 mm, 8.1 mm, 0.8 mm
M8, M5, M16, M5 (Form A), M4
BS 4320B, BS 4320G, DIN 7603A, BS 4463, ASME B18.21.1