1 Scope
This standard specifies the terms and definitions, classification, symbol, profile, tolerance, requirements, inspection, marking and packaging of gauges for general purpose screw threads.
This standard is applicable to the gauges for general purpose screw threads with a profile angle of 60°, a nominal diameter of 1 mm to 355 mm and a screw pitch of 0.2 mm to 8 mm.
The gauges for general purpose screw threads specified in this standard (hereinafter referred to as "thread gauge") is applicable to the inspection of general purpose metric screw threads specified in GB/T 192-2003, GB/T 193-2003, GB/T 196-2003 and GB/T 197-2003.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition applies.
GB/T 192-2003 General purpose metric screw threads - Basic profile (ISO 68-1: 1998, MOD)
GB/T 193-2003 General purpose metric screw threads - General plan (ISO 261: 1998, MOD)
GB/T 196-2003 General purpose metric screw threads - Basic dimensions
GB/T 197-2003 General purpose metric screw threads - Tolerances (ISO 965-1: 1998, MOD)
3 Terms and definitions
The terms and definitions specified in GB/T 192-2003, GB/T 193-2003, GB/T 196-2003, and GB/T 197-2003 and the following apply.
3.1
gauges for general purpose screw threads
a measuring instrument that has standard profiles for general purpose metric screw threads, and can reflect the boundary condition of the inspected internal and external thread. It can be classified into working gauges for general purpose screw threads and check gauges for general purpose screw threads based on the use performance
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Symbols
6 Thread profile of thread gauge
7 Tolerance
8 Requirements
9 Inspection
10 Marking and packaging
Annex A (Normative) Smooth limit gauge
Annex B (Informative) Height of profile of not go screw ring gauges
Annex C (Normative) Judgment whether qualified or unqualified of thread of workpieces
