Application : For testing the flank diameter of female threads and compliance with minimum dimensions of the external diameter
Execution : Hardened and finely ground
Right-hand thread
Tolerance 6H
Go side with full thread profile (must screw into the test specimen without the use of force)
Scrap side with shortened thread flanks and only a few turns (must not screw in)
Best gauge steel
Thread type : Metric thread
Thread : M20 × 2.5
Pitch : 2.5 mm
Tolerance class : 6H
Material : Gauge steel
DIN : 13 / 2280