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Overview EN ISO 6157-2:2004 (ISO 6157-2:1995) specifies permissible surface discontinuities for nuts. It covers nuts with nominal thread diameters from 5 mm to 39 mm, product grades A and B, and all…
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,…
1 Scope This part of ISO 6157 establishes limits for various types of surface discontinuities on nuts. It applies to nuts with – nominal thread diameters from 5 mm up to and including 39 mm; – produc…
Overview ISO 6157-3:1988 - Fasteners: Surface discontinuities - Part 3 covers acceptance limits, inspection and sampling for surface discontinuities specifically in bolts, screws and studs for specia…
Overview ISO 6157-2:1995 - “Fasteners - Surface discontinuities - Part 2: Nuts” defines acceptable limits and inspection practices for surface defects on nuts. It covers nuts with nominal thread diam…
Overview ISO 6157-1:1988 - "Fasteners - Surface discontinuities - Part 1: Bolts, screws and studs for general requirements" defines permissible surface discontinuities and inspection principles for b…