Reference number
ISO 4156-1:2021
© ISO 2026
International Standard
ISO 4156-1:2021
Straight cylindrical involute splines — Metric module, side fit — Part 1: Generalities
Edition 2
2021-02

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Published (Edition 2, 2021)
This publication was last reviewed and confirmed in 2026. Therefore this version remains current.

ISO 4156-1:2021

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Format
CHF 204
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Abstract

This document provides the data and indications necessary for the design and manufacture of straight (non-helical) side-fitting cylindrical involute splines.

Limiting dimensions, tolerances, manufacturing deviations and their effects on the fit between connecting coaxial spline elements are defined in the formulae and given in the tables. Unless otherwise specified, linear dimensions are expressed in millimetres and angular dimensions in degrees.

General information

  • Status
     : Published
    Publication date
     : 2021-02
    Corrected version (en)
     : 2025-12
    Corrected version (fr)
     : 2025-12
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 2
    Number of pages
     : 62
  • Technical Committee :
    ISO/TC 14
    ICS :
    21.120.30 
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