Page 712 - Yamawa_European_Catalogue_YEU21

22. Basic Profile of Threads

Intro

Metric Screw Threads (M, MF) Unified Screw Threads (UN)
SP

Internal Internal
Threads Threads
SL
External External
Threads Threads
d1 or D1 d2 or D2 d or D d1 or D1 d2 or D2 d or D

PO
Threads per inch

Whitworth Screw Threads (BSW) Screw Threads for Sewing Machine (SM)
ST

Internal Internal
Threads Threads
ROLL

External External
d1 or D1 ɹç D1’ɹ d2 or D2 d or D d1 or D1 ɹç D1’ɹ d2 or D2 d or D
Threads Threads
CARBIDE

Threads per inch Threads per inch

LONG Miniature Screw Threads (S) Parallel Pipe Threads (G-BSP)

Internal
HAND Internal Threads
TAPS Threads

External
External Threads
Threads
EG (STI) d1 or D1 d2 or D2 d or D d1 or D1 d2 or D2 d or D

Threads per inch
SPECIAL
THREADS,
GAUGES Taper Pipe Threads (Rc-BSPT) Parallel Internal Pipe Threads (Rp-BSPP)

Internal
THREAD Threads Internal
MILLS Threads

External Threads
ç
DIES
Central axis line of thread Central axis line of thread

CENTER Threads per inch Threads per inch
DRILLS

Technical
info

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