Lock Washer, Nylon Washers, Plain Washer, Full Washers, Form A
301 Stainless Steel, Fibre, Vulcanised Fibre, TPE, Brass
12 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
17 mm, 21 mm, 2.6 mm, 4.85 mm, 6.5 mm
8.1 mm, 1.5 mm, 3.5 mm, 0.3 mm, 2.2 mm
M5 (Form A), M6, M12, M20, M2.5
BS 4320G, DIN 125A, DIN 7603A, ASME B18.22.1
ASTM F844, BS 4320B