Thread typesProfileSectional drawingInsertInternal thread pitch [mm]External thread pitch [mm]Page
ISO metric coarse thread 60° full profileGM0,5-6,00,5-6,0A413
ISO metric coarse thread 60° partial profile60°60 o0,5-5,0 (5-48)0,5-5,0 (5-48)A415
ISO metric coarse thread 55° partial profile55°55 o0,5-5,0 (5-48)0,5-5,0 (5-48)A416
WhitworthW8-168-16A417
UN unified conventional thread 60° full profileUN8-208-20A418
BSPT Whitworth taper pipe threadBSPT11-2811-28A419
NPT American taper pipe threadNPT1 o478-278-27A420
NPTF dryseal American taper pipe thread 60°NPTF30 o30 o 90 o 1 o47’8-278-27A421

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