Transcription of ISO Trapezoidal screw threads Tr - FMS
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2007/1 Page 1 - 4 ISO Trapezoidal screw threads Tr NOMINAL PITCH DIAMETER d2 & D2 d2/D2 = d/D PDn (PDn = ) EXTERNAL thread d = major diameter d2 = Pitch diameter d1 = Minor diameter INTERNAL thread D = Major diameter D2 = Pitch diameter D1 = Minor diameter P = Pitch = Flank angle 30O Ref.: ISO 2901 ISO metric Trapezoidal screw threads Basic profile and maximum material profiles. ISO 2902 ISO metric Trapezoidal screw threads general plan ISO 2903 ISO metric Trapezoidal screw threads Tolerances ISO 2904 ISO metric Trapezoidal screw threads basic dimensions These standards contain much more information than given here.
3.11 2007/1 Page 1 - 4 ISO Trapezoidal screw threads Tr WWW.F-M-S.DK NOMINAL PITCH DIAMETER d 2 & D 2 d 2 /D 2 = d/D – PDn (PDn = 0.5P) EXTERNAL THREAD …
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