Page 397 - THREADING CATALOG

USER GUIDE
TAPS

Thread Standards

Cylindrical threads
UNC unified coarse thread series
UNF unified fine thread series
UNEF unified extra-fine thread series
UN constant pitch series - threads with constant pitch of t.p.i. 4, 6, 8, 12, 16, 20, 28, 32
UNS selected combinations - threads with special dia. - pitch combinations
UNJ unified threads with constant pitch with radius on minor diameter from 0.15011 pitch to 0.18042 pitch
UNJC unified coarse thread with radius on minor diameter from 0.15011 pitch to 0.18042 pitch
UNJEF unified extra-fine thread with radius on minor diameter from 0.15011 pitch to 0.18042 pitch
UNJF unified fine threads with radius on minor diameter from 0.15011 pitch to 0.18042 pitch

Pipe cylindrical threads
NPS cylindrical threads for pipe
NPSC american standard for pipe coupling
NPSF american standard for internal threads on pipe, dryseal
NPSH american standard for cylindrical threads for pipes, joints and nipples
NPSI american standard for internal cylindrical threads on pipe (dryseal)
NPSL american standard for cylindrical threads on pipes for nuts
NPSM american standard for cylindrical threads on pipes for mechanical joints
NGO american national pipe threads for gas exhaust
NGS american national pipe threads for gas
Taper pipe threads
ANPT taper pipe threads for army, navy and airforce
F-PTE taper pipe fine threads (dryseal)
Trapezoidal and saw tooth threads
ACME-C ACME self-centering threads
ACME-G ACME generical application
STUB-ACME acme flat threads with reduced thread depth
60º STUB-ACME acme flat threads with 60º flank angle
N BUTT american national saw tooth threads

British standard
BSW whitworth british standard coarse pitch
BSF whitworth british standard fine pitch
WHIT whitworth standard special pitch
R british standard external threading for taper pipe (dryseal) (already BSP-Tr)
Rc british standard internal threading taper thread for pipe (BSP-Tr)
Rp british standard cylindrical thread for pipe (already BSP.PI)
BA british standard association threads
BSC british standard threads for bicycles
CEI british standard for bicycles

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