The software product QMSys Threads is a program designed for engineers, quality control managers, mechanics, etc., and its purpose is to save time and prevent human errors in determining nominal and limit values of thread parameters. The calculated results are based on international standards and comprise information about values and tolerances of threaded products.
QMSys Threads comprises data base and methods of calculating the nominal and limit sizes of the following types of threads:
- Metric Thread M, MJ acc. to ISO 68-1, DIN 13, ISO 5855-1
- Unified Thread (UN, UNR, UNJ) acc. to ANSI/ASME B1.1, B1.15
- ISO Parallel Pipe Thread acc. to ISO 228-1
- Whitwort thread acc. to BS 84
- ISO Taper Pipe Thread acc. to ISO 7-1, EN 10226
- ANSI General Pipe Thread NPT - ANSI B1.20.1
- ANSI Dryseal Pipe Thread NPTF - ANSI B1.20.3
- ASME Hose Coupling Threads NPSH, NH - ANSI B1.20.7
- NFPA Fire-hose coupling threads NH - NFPA 1963
- ISO Metric Trapezoidal Thread acc. to ISO 2901, DIN 103, DIN 380
- ACME, STUB ACME Trapezoidal Thread acc. to ANSI/ASME B1.5, ANSI/ASME B1.8
- Metric miniature thread acc. to DIN 14, ISO/R 1501
- Unified miniature screw thread UNM acc. to ANSI/ASME B1.10
- Metric Buttress screw thread acc. to DIN 513
- Knuckle screw thread acc. to DIN 405, DIN 20400
- Steel conduit thread Pg - DIN 40430, DIN 40431
- API pipe threads LP, CSG, BCSG, TBG - API Spec. 5B , 5B1
- STI - Helical coil threads for inserts
- Automatic corrections for coatings, statistic and arithmetic tolerance computation.
- Implementation of custom screw threads and gauges.
For determining the pitch diameter during measurement by the 3 wire/ball method, the limiting values of the outcome from measuring by the method described in the publication EA – 10/10 are additionally calculated.