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1, Applied specification: API Spec 7-2;

2, Material: bearing steel that is hardened to Rockwell C60-63;

3, Guaranteed quality: We have been manufacturing API gauges since 1970s. Our gauges have been field-tested by over 800 customers in 35 countries;

4, 3rd-party calibration: All our working gauges are calibrated and certified with certified API reference master gauges by a national-level 3rd-party calibration center which is accredited to ISO/IEC 17025:2005.

When ordering, please specify the following information:

1, Types & sizes of connections;

2, Master gauges or working gauges;

3, Ring or plug, or set;

4, Right hand or left hand.

All dimensions in millimeters, except as indicated.
REGULAR ROTARY (REG)
SIZETHREAD FORMT.P.I.T.P.F.PITCH DIAMETERSTANDOFF TOLERANCE
REG 2-3/8V-0.040
5
1:4
60.080
15.875±0.100
REG 2-7/869.605
REG 3-1/282.293
REG 4-1/2110.868
REG 5-1/2V-0.0504132.944
REG 6-5/81:6146.248
REG 7-5/81:4
170.549

REG 8-5/8

194.731