Pipe thread
NPSC – NPSF – NPSL – NPSM ANSI B1.20.1-1983
Pipe thread
Whitworth thread
BSF Fine thread BS 84
W = BSW Coarse thread BS 84
UN (Unified National) thread
UNEF Extra Fine thread ANSI B1.1
UNR ANSI B1.1
UNS ANSI B1.1
Trapezoidal thread
Tr DIN 103
Knuckle thread
Rd DIN 405 / DIN 20400
Buttress thread
S DIN 513 / DIN 514
Cycle thread
Fg DIN 79012
Edison thread
E DIN 40400
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