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Overview EN 26157-1:1991 - Fasteners - Surface discontinuities - Part 1: Bolts, screws and studs for general requirements (ISO 6157-1:1988) is a CEN standard that establishes limits and acceptance cr…
Overview EN 26157-3:1991 (identical with ISO 6157-3:1988) is a CEN standard that defines limits for surface discontinuities (surface defects) on high-strength fasteners. It specifically covers bolts,…