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Overview EN 1663:1997 (CEN) covers prevailing-torque type hexagon nuts with flange that include a non‑metallic annular insert. The standard applies to coarse thread sizes M5 to M20 inclusive and refe…
Overview ISO 7043:2012 specifies the characteristics of prevailing torque type hexagon nuts with flange (with non‑metallic insert), style 2, for metric threads M5 to M20. It covers dimensional limits…