HEMCOChrome™ Process- unconditionally guaranteed against chipping
All gages conform to ANSI B47.1
L1 Plug classifies the thread as to “Maximum”, “Basic” or “Minimum”
L3 Plug must match the classification of the L1 plug within +/- 1/2 turns
6-Step Crest Check Plug: When the L1 plug is at the maximum notch, the 6-step gage must go between “MX” and “MXT” notch. When the L1 plug is at the Basic Notch, the 6-Step Gage must go between “B” and “BT” notch. When the L1 plug is at minimum notch, the 6-Step Gage must go between the “MN” and “MNT” notches
Click here to view more information about our NPTF Thread Gage
Click here to learn more about the basic use of NPTF 3-step & 6-step gages
Click here to view more information about our NPTF Thread Gage
Click here to view more information about NPTF Class 2 Specifications
Click here to view more information about ANSI Thread Series Designations
