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UN Thread Ring Gages
    Publish time 2023-01-30 16:21    

All thread gages are marked with nominal size, threads per inch(inch) or pitch(metric), class of fit and pitch diameters.

UN Thread Ring Gages

Unified Threads are used for general purpose fastening applications for Imperial system of units.

SOWANT GAGE manufacture Unified Gauges as per American Standard : Basic Dimensions as per ANSI B 1.1:2003 & Gauging Practice as per ANSI/ASME B 1.2-1983.
SOWANT GAGE  also manufacture Unfied Gauges & Gauging Practice as per BS 919 Part 1-2007.

Manufacturing Range :

Thread Plug & Ring Gauges from No. 4 (0.112") to 12"

Gauge TypeDiameter Range (Inch)TPI (Threads per Inch)Tolerance Class
Thread Plug Gauges.No.4 (0.112"-12")48, 44, 40, 36, 32, 28, 24, 20, 18,
16, 14, 13, 12, 11.5, 11, 10, 9, 8,7,6, 5, 4.5, 4 TPI not covered here can be supplied based on customer request		As given in below Table
Thread Ring Gauges.No.4 (0.112"-10.25")48, 44, 40, 36, 32, 28, 24, 20, 18, 16, 14, 13, 12, 11.5,11,10, 9, 8,7,6, 5, 4.5, 4 TPI not covered here can be supplied based on customer request.As given in below Table
Plain PlugsTo check Minor Diameter of Internal Threads as per above Diameter range.
Plain RingsTo check Major Diameter of External Threads as per above Diameter range.
Check Plug GaugesTo check NEW Go & Nogo Ring Gauges as given above.
Wear Check Plug GaugesTo check / calibrate USED Go & Nogo Ring Gauges as given above.
Check Ring GaugesTo check NEW Go & Nogo Plug Gauges as given above.
Wear Check Ring GaugesTo check / calibrate USED Go & Nogo Plug Gauges as given above.

Tolerance Class

Tolerance Class for Plug gauges (Internal threads)

Tolerance Class for Ring gauges (External threads)

Application

1B1AWhere quick assembly is needed, even when threads are dirty / damaged. Wide tolerances for male and female threads.
2B2ACorresponds to medium fit and used for general applications, which requires free assembly.
3B3AWhere closer fit is required.


SOWANT precision gage not only a manufactory of UN thread gages, we also can offer you ACME thread ring gages, stub acme thread plugs ,and Buttress thread gages, API thread gages, Mitutoyou bore gages with China price . any request, you can send to us.