Plain Washer, Mudguard, Internal Tooth, Full Washers, Form A
301 Stainless Steel, TPE, Copper, Nylon, Brass
7.99 mm, 15.5 mm, 6.9 mm, 20 mm, 11.88 mm
12.5 mm, 2.25 mm, 21 mm, 4.36 mm, 6.5 mm
0.28 mm, 8.1 mm, 0.5 mm, 2 mm, 0.16 mm
M3 (Form A), M24, M5 (Form A), M5, M3
BS 4320:1968, BS 4320G, BS 4320, BS 4320B, BS 4463