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The limit dimensions for standard threads given in the table correspond to the - tolerance field 6g for bolt threads - tolerance field 6H for nut threads. The metric steel / metal threads specified in this catalog are based on these tolerance fields.
10.5 DIN 13 ISO Metric threads ISO Metric threads – DIN 13 (Thread limits for standard engagement lengths to UNI 5545-65) Nominal thread-Ø Gra-dient P Screw with tolerance of 6g Nut screw with tolerance of 6H Ø major d Ø pitch d 2 Ø minor d 1 Ø major D Ø pitch D Ø minor D max. min. max. min. max. min. min. max. min. max. min. max.
ISO 965-1 - ISO general purpose metric screw threads -- Tolerances -- Part 1: Principles and basic data. Location tolerance zones relative to the zero line (nominal size) Basic tolerances for internal and external threads. Pitch P.
ISO 965-1:2013 specifies a tolerance system for ISO general purpose metric screw threads (M) conforming to ISO 261. The tolerance system refers to the basic profile according to ISO 68-1.
ISO METRIC THREADS - DIN 13 (thread limits) P (mm) Screw with tolerance of 6g Nut screw with tolerance of 6H Ø major d Ø pitch d2 Ø minor d1 Ø major D Ø pitch D2 Ø minor D1 max. min. max. min. max. min. min. max. min. max. min. max. M3 0.5 2.980 2.874 2.655 2.580 2.367 2.273 3.000 2.675 2.775 2.459 2.599
DIN 13. nut thread. bolt thread. The medium tolerance class applies to the threads listed, i.e. 6H for nut threads and 6g for bolt threads. The (metal) threads in this catalogue are manufactured according to these tolerance classes.
ISO 965-3 - ISO general purpose metric screw threads -- Tolerances -- Part 3: Deviations for constructional screw threads. ES, es = upper deviation; El, ei = lower deviation.