Обший каталог Yamawa 2016 - 2017 - страница 859

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29. 29. Basic profile of threads

  • Thick Steel Conduit Threads (CTG)

Internal Thread

27.5°27.5° 55° External Thread P H =0.960491P

H1 =0.560286PD=d
d 2 =d-0.640327PD2 =d2P=25.4/n
d 1 =d-1.120572PD 1 =d1n=Thread per inch
  • Steel Conduit Threads (CTC)

Internal Thread Threads per inch 40° 40° 80° External Thread P

H=0.59588Pd 1 =d-0.87703P
H1 =0.43851PD=d
H2 =0.09778PD 2 =d2P=25.4/n
d2 =d-0.47670PD 1 =d1n=Thread per inch
  • Bicycle Threads (BC)

Internal Thread r 30° 30° r 60° External Thread P

H=0.8660Pd 1 =d-2H1
H1 =0.5327PD=dD'1 =d1+2×P/12
r=P/6D 2 =d2P=25.4/n
d 2 =d-H1D 1 =d1n=Thread per inch
  • Tire Valve Threads (TV), Bicycle Tire Valve Threads (CTV)

Internal Thread

30° 30° 60° External Thread P H =0.866025P

H 1 =0.541266PD=d
d 2 =d-0.649519PD2 =d2P=25.4/n
d 1 =d-1.082532PD1 =d1n=Thread per inch