Screw Thread Designations and Symbols P

ANSI Hardware Menu
Fastener and Screw / Bolt Design, Formula and Calculations

Screw Thread Designations and Symbols P - Z

The following chart contains industry standard designations for Screw 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