Page 715 - Yamawa_European_Catalogue_YEU21

23. Symbols for Standard Threads

Intro

ISO
SP
Thread symbol Kinds of thread Related Standard
M ISO Metric threads ISO 261
UNC ISO Unifi ed threads, coarse series ISO 263
UNF ISO Unifi ed threads, fi ne series ISO 263
SL
UNEF ISO Unifi ed threads, extra fi ne series ISO 263
UN ISO Unifi ed threads, constant pitch series ISO 263
G Parallel pipe threads ISO 228/1
Rp Parallel internal pipe threads ISO 7/1
PO
Rc Taper internal pipe threads ISO 7/1
R Taper external pipe threads ISO 7/1
S ISO Miniature screw threads ISO 1501
Tr ISO Metric trapezoidal screw threads ISO2902
UNJC Aerospace - UNJ threads (coarse) ISO 3161 ST
UNJF Aerospace - UNJ threads (fi ne) ISO 3161
UNJEF Aerospace - UNJ threads (extra fi ne) ISO 3161
UNJ Aerospace - UNJ threads (constant pitch series) ISO 3161
MJ Aerospace - MJ threads ISO 5855 ROLL
GL Glass container threads ISO 1115
V Tire valve threads ISO 4570/1-3

CARBIDE

Japan
LONG
Thread symbol Kinds of thread Related Standard
M Metric screw threads JIS B 0205-1 - 0205-4
S Miniature screw threads JIS B 0201
HAND
UNC Unifi ed threads, Coarse series JIS B 0206
TAPS
UNF Unifi ed threads, Fine series JIS B 0208
Tr Metric Trapezoidal screw threads JIS B 0216
R Taper external pipe threads JIS B 0203 (JIS main book)
Rc Taper internal pipe threads JIS B 0203 (JIS main book)
EG (STI)
Rp Parallel internal pipe threads JIS B 0203 (JIS main book)
G Parallel pipe threads JIS B 0202 (JIS main book)
PF Parallel pipe threads JIS B 0202 (JIS Appendix)
PT Taper pipe threads JIS B 0203 (JIS Appendix) SPECIAL
THREADS,
PS Parallel internal pipe threads JIS B 0203 (JIS Appendix)
GAUGES
CTC Screw threads for rigid metal thin-walled conduit and fi tting JIS C 8305
CTG Screw threads for rigid metal thick-walled conduit and fi tting JIS C 8305
BC Cycle threads JIS B 0225
THREAD
SM Screw threads for sewing machine JIS B 0226 (2001.2.20 repeal)
MILLS
E Electric socket and lamp-base threads JIS C 7709
V Tire valve threads of automobile JIS D 4207
CTV Tire valve threads of cycle JIS D 9422
DIES

CENTER
DRILLS

Technical
info

713