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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 consists of the following parts, under the general title ISO general purpose metric screw threads — Tolerances: — Part 1: Principles and basic data. — Part 2: Limits of sizes for general purpose external and internal screw threads — Medium quality. — Part 3: Deviations for constructional screw threads.
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.
Technical norms. 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. a Pitch 8 mm only applies to large diameter and greater M125.
This part of ISO 965 specifies a tolerance system for ISO general purpose metric screw threads (M) according to ISO 261. The tolerance system refers to the basic profile according to ISO 68-1.
ISO 724 - ISO general-purpose metric screw threads - Basic dimensions (DIN 13), the standard in Europe, is recognizable by its cylindrical outer and inner diameter and its precise outer diameter in millimeters. Thread Dimensional Data. d = Basic Nominal Diameter.