BS 2059:1953

Co-operating organizations
Foreword
Part 1 - Straight-sided splines (parallel rectangular section)
         and gauges for splines
1 Introduction
2 Scope
3 Nomenclature and definitions
4 Dimensions and fits
5 Gauges
6 Alignment errors in long splines
Appendix A - Relationship of spline width to shaft minor
             diameter
Appendix B - Variations in arc of root diameter
Appendix C - Examples of gauging dimensions for internal and
             external deep splines of 1 in. nominal diameter
Appendix D - Relationship of gauge and work tolerances
Part 2 - Serrations (straight-sided) and gauges for serrations
7 Introduction
8 Scope
9 Nomenclature and definitions
10 Dimensions and fits
11 Gauges
Appendix E - Basis of calculations for dimensions and tolerances
Appendix F - Gauging of serrations
Appendix G - Notes on production methods

Dimensions of internal and external splines and of Full Form $7Igo$7R gauges and $7Inot go$7R feature gauges. Dimensions for straight-sided 90° serrations, line size ½ in to 6 in, serration ¼ in to 6 in. Tables for shallow and deep splines, and for coarse serrations only. Three grades of fit.

Part 1 of this British Standard relates to straight parallel-sided splines, produced in holes or on shafts having a nominal size from ½ in. to 6 in. inclusive.

Provision is made for 6 equi-spaced splines in all cases irrespective of diameter and for two depth designated “shallow” and “deep”. The type is that known as “bottom fitting” (top clearance).

The nomenclature and terms used are defined.

The dimensions given in Table 1 and Table 2 allow for three grades of fit and apply whether the components are in the heat-treated condition or not. (Details of these fits are given in the introduction.)

Details are given of dimensions and design of the gauges required for all sizes.

Details are also included of the maximum errors of twist permissible when a spline is considerably longer than the gauges, thus making direct measurement necessary.

Notes on a method of producing various fits and a graphical representation of such fits are given in Appendices.