Общий каталог Yamawa 2022 - 2023 - страница 1219

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○Classification of American pipe thread taps Unit : μm

Crest Root

DesignationSymbolClassMaterialThreads to be cutRange
Straight Pipe Thread Tap1 / 8
Dryseal Straight Pipe Thread Tap1 / 8 3 / 4
Taper Pipe Thread Tap1 / 16
Dryseal Taper Pipe Thread Tap1 / 16

Max. Min. Max. Min. Max. Min. Max. Min.

■Thread limit of American Pipe Thread Taps

○Straight pipe thread taps for (NPS) G Class

■Thread limit of Dryseal American Pipe Thread Taps

○Straight pipe thread taps (NPSF) G Class

Measurement Flank limit (deviation) Flank limit (measurement)

Unit : mm

SizeMax.Major diameter Min. Max. TolerancePitch diameter Min.ToleranceMinor diameter※ Max.
r pipe threa dimensions change dd taps (NPT) G epending on actuallyClass measured. Tc (Max) Tc (Min) Fc(Max) Fc (Min) Tr(Max) Tr (Min) Fr(Max) Fr(Min)
Axis of tap Taper

Fr (Max) Fr (measurement) Fr (Max)

Major diameter Pitch diameter Minor diameter※

Max. Min. Tolerance Max . Min. Tolerance Max. Fr (Max) Tr (Max)

※ : Above dimensions change depending on actually measured.

Technical Inf