Pipe Thread Gages

Pipe Thread Gages

Regal’s  plug and ring pipe thread gages are made from hardened tool steel  and conform to precise class X tolerances and ANSI  Standards. Pipe thread gages for NPT threads are available from 1/16-27 to 6”-8, NPTF and ANPT from 1/16-27 to 1 ½”- 11 1/2”.  British Standard Pipe thread gages ( 55⁰ Modified Whitworth) are in stock as well.

A certificate of Accuracy is included with every gage at no charge and a Certificate of Calibration is provided when necessary at a nominal cost.  Special pipe thread gages, either plug or ring  can be manufactured to your needs.

Regal’s  plug and ring pipe thread gages are made from hardened tool steel  and conform to precise class X tolerances and ANSI  Standards. Pipe thread gages for NPT threads are available from 1/16-27 to 6”-8, NPTF and ANPT from 1/16-27 to 1 ½”- 11 1/2”. 

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NPSF (Dryseal) straight pipe working gages are used to check size of the straight internal threads intended for assembly with NPTF external threads. A GO and NO GO gage are used to insure the threaded part is within acceptable tolerance.
NPSM straight thread gages are designed for free fitting mechanical joints.

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British Standard Taper Pipe gages are used in a similar process as NPT gages.

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L1 gages check the effective diameter at the gage line.L2 external and L3 internal check the remaining thread length and the taper. Gages are available with or without handles or holders.

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The purpose of the six step internal or external gage is to measure the pitch diameter size of the part which is essential in Dryseal and Aeronautical parts. It is used in conjunction with the L1 gage.

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