M5 M6 M8 BUTTON HEAD ALLEN BOLTS HEX SOCKET SCREWS A2 STAINLESS STEEL - ISO 7380. M2 M2.5 M3 M4 M5 ALLEN KEY GRUB SCREWS CUP POINT SCREWS A2 STAINLESS DIN 916. Flat Washers are predominantly designed to amplify the load-bearing competence of a threaded fastener, and are well-suited with a variety of Precision Screws.
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