Page 740 - Iscar

USER GUIDE
TAPS Thread Standards

Cylindrical threads Taper pipe threads
UNC Unified coarse thread series NPT Taper pipe threads
UNF Unified fine thread series NPTF Taper pipe threads (dryseal)
UNEF Unified extra-fine thread series NPTR Taper pipe threads for railway equipment
UN Constant pitch series - threads PTF-SAE SHORT Taper pipe short
with constant pitch of T.P.I. threads (dryseal)-SAE
4, 6, 8, 12, 16, 20, 28, 32 PTF-SPL SHORT Taper pipe special
UNS Selected combinations - threads threads (dryseal)-SAE
with special dia. - pitch combinations PTF-SPL EXTRA SHORT Extra short
UNJ Unified threads with constant pitch special threads (dryseal)-SAE
with radius on minor diameter from SPL-PTF Special taper pipe dryseal threads
0.15011 pitch to 0.18042 pitch NGT National American taper pipe threads
UNJC Unified coarse thread with radius on SGT Special taper pipe threads
minor diameter from 0.15011 API American Petroleum
pitch to 0.18042 pitch Institute taper pipe threads
UNJEF Unified extra-fine thread with
radius on minor diameter from
0.15011 pitch to 0.18042 pitch Trapezoidal and saw tooth threads
UNJF Unified fine threads with radius on
minor diameter from ACME-C ACME Self-centering threads
0.15011 pitch to 0.18042 pitch ACME-G ACME Generical application
STUB-ACME ACME Flat threads with
reduced thread depth
Pipe cylindrical threads 60º STUB-ACME ACME Flat threads with
60º flank angle
NPS Cylindrical threads for pipe N BUTT American National Saw tooth threads
NPSC American Standard for pipe coupling
NPSF American Standard for internal
threads on pipe, dryseal British Standard
NPSH American Standard for cylindrical BSW Whitworth British Standard coarse pitch
threads for pipes, joints and nipples
NPSI American Standard for internal BSF Whitworth British Standard fine pitch
cylindrical threads on pipe (dryseal) WHIT Whitworth Standard special pitch
NPSL American Standard for cylindrical R British Standard external threading
threads on pipes for nuts for taper pipe (dryseal) (already BSP-Tr)
NPSM American Standard for cylindrical Rc British Standard internal threading
threads on pipes for mechanical joints taper thread for pipe (BSP-Tr)
NGO American National pipe threads for Rp British Standard cylindrical
gas exhaust thread for pipe (already BSP.PI)
NGS American National pipe threads for gas BA British Standard Association threads
BSC British Standard threads for bicycles
CEI British Standard for bicycles
Taper pipe threads
ANPT Taper pipe threads for Army, Navy and Airforce
F-PTE Taper pipe fine threads (dryseal)

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