29. Symbols for Standard Threads

  • Japan
Thread symbolsKinds of threadsRelated Standards
Metric screw threads
Miniature screw threads
Unified threads, Coarse series
Unified threads, Fine series
Metric Trapezoidal screw threads
Taper external pipe threads(JIS main book)
Taper internal pipe threads(JIS main book)
Parallel internal pipe threads(JIS main book)
Parallel pipe threads(JIS main book)
Parallel pipe threads(JIS Appendix)
Taper pipe threads(JIS Appendix)
Parallel internal pipe threads(JIS Appendix)
Screw threads for rigid metal thin-walled conduit and fitting
Screw threads for rigid metal thick-walled conduit and fitting
Cycle threads
Screw threads for sewing machine(2001.2.20repeal)
Electric socket and lamp-base threads
Tire valve threads of automobile
Tire valve threads of cycle

■ISO

Thread symbolsKinds of threadsRelated Standards
ISO Metric threads
ISO Miniature screw threads
ISO Metric trapezoidal screw threads
ISO Unified threads, coarse series
ISO Unified threads, fine series
ISO Unified threads, extra fine series
ISO Unified threads, constant pitch series
Aerospace - UNJ threads (coarse)
Aerospace - UNJ threads (fine)
Aerospace - UNJ threads (extra fine)
Aerospace - UNJ threads (constant pitch series)
Aerospace - MJ threads
Taper external pipe threads
Taper internal pipe threads
Parallel internal pipe threads
Parallel pipe threads
Glass container threads
Tire valve threads