The following chart contains industry standard designations for thread types.
| PTF |
Dryseal SAE Short Taper pipe thread |
| SGT |
Special Gas Taper thread form |
| SPL-PTF |
Dryseal Short Taper Pipe thread |
| STI |
Special Threads for Helical Coil Wire Screw Thread Inserts |
| UN |
Unified and American thread series |
| UNC |
Unified and American Coarse thread series |
| UNEF |
Unified and American Extra-Fine thread series |
| UNF |
Unified and American Fine thread series |
| UNIV |
Unified Miniature Thread Series |
| UNJ |
Unified Thread Series with Controlled Root Radius |
| UNJC |
Unified Coarse Thread Series with Controlled Root Radius |
| UNJF |
Unified Fine Thread Series with Controlled Root Radius |
| UNR |
Unified Constant Pitch thread series with Controlled Root Radius |
| UNRC |
Unified Coarse Thread Series with Controlled Root Radius |
| UNRF |
Unified Fine Thread Series with Controlled Root Radius |
| UNS |
Unified and American threads of selected special diameters and pitches |
