ISO 1502 : 1996(R2016)

Contents
1. Scope
2. Normative references
3. Symbols and abbreviations
4. Types of gauges
    4.1 Gauges for external threads of workpieces and
         their check plugs and setting plugs
    4.2 Gauges for internal threads of workpieces
5. Gauging of workpieces
    5.1 Gauging of external threads
    5.2 Gauging of internal threads
    5.3 Inspection gauging
6. Reference temperature
7. Function, checking and use of gauges
    7.1 Gauges for external threads of workpieces and
         their check plugs and setting plugs
    7.2 Gauges for internal threads of workpieces
8. Tolerance zones for the diameters of gauges
    (see figures 1 and 2)
9. Tolerance zones for plain gauges (see figures 3 and 4)
10. Thread profiles for gauges
    10.1 Profiles with complete flanks (see figures 5 and 6)
    10.2 Profiles with truncated flanks (see figures 7 and 8)
    10.3 Displacement of the clearance groove for a profile
         with truncated flanks
11. General features of screw pauges
    11.1 Gauges for external threads of workpieces
    11.2 Gauges for internal threads of workpieces
    11.3 Blunt start of thread
12. Tolerances and permissible wear for pitch diameters of
    gauges (see tables 4 to 9)
13. Formulae for calculation of gauge limits
    13.1 Screw gauges for external threads of workpieces
    13.2 Plain gauges for the major diameters of external
         threads of workpieces
    13.3 Screw gauges for internal threads of workpieces
    13.4 Plain gauges for the minor diameters of internal
         threads of workpieces
Annex
A Bibliography

This International Standard gives details for the manufacture and use of gauges for checking ISO general-purpose metric screw threads with a basic profile in accordance with ISO 68.