DIN 433 (-1) - 1990 Product Grade A, Up To Hardness 250 HV, Primarily for Cheese Head Screws 23 [ASME] ASME B 18.2.6 - 2019 Hardened Steel Circular and Circular Clipped Washers (ASTM F436 / F436M) 24 [DIN] DIN 6916 - 1989 Round Washers for High-Tensile Structural Bolting ...
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