Spiralock® Gage Sets
Gaging Spiralock® threads requires the use of special gages to ensure proper function of the thread. Non-Spiralock gages cannot determine the functionality of Spiralock® threads.
- Conventional Spiralock® threads:
Conventional Spiralock® threads are defined as those of 32 threads per inch and coarser in English sizes and 0.80 mm lead and coarser in metric sizes. These threads utilize a three (3) member gaging system. It consists of one (1) GO Pitch Diameter & Ramp Gage, one (1) NOT-GO Pitch Diameter Gage, and one (1) NOT-GO Ramp Gage. In the catalog, these gages are defined as GO PLUG, HI-LIMIT P.D., and HI-LIMIT RAMP, respectively (See Section 13.3). - Sawtooth Spiralock® Threads:
Spiralock® sawtooth threads are defined as those finer than 32 threads per inch in English sizes and finer than 0.80 mm lead in metric sizes. These threads utilize a two (2) member gaging system. It consists of one (1) GO Pitch Diameter & Ramp Gage and one (1) NOT-GO Ramp Gage. In the catalog these gages are defined as GO PLUG and HILIMIT respectively (See Section 13.4).