Общий каталог Yamawa 2021

23. Symbols for Standard Threads

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
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
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
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
GL	Glass container threads	ISO 1115
V	Tire valve threads	ISO 4570/1-3

Thread symbol	Kinds of thread	Related Standard
M	Metric screw threads	JIS B 0205-1 - 0205-4
S	Miniature screw threads	JIS B 0201
UNC	Unifi ed threads, Coarse series	JIS B 0206
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)
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)
PS	Parallel internal pipe threads	JIS B 0203 (JIS Appendix)
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
SM	Screw threads for sewing machine	JIS B 0226 (2001.2.20 repeal)
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