NPT - left hand

NPT - left hand

american tapered pipe thread, taper 1:16

NPT Left Hand

Short machine taps for left-handed american tapered pipe thread (NPT LH). Taps especially suitable for non abrasive materials up to 900 N/mm².

  • NPT Short machine taps for unalloyed and low alloyed steel
  • Form C: for through and blind holes
  • Taps for thread cutting by hand and machine 


  • Form C: for through and blind holes
  • Form B: for through holes
  • Form C with 35° spiral flute: for blind holes

NPT Left-handed thread NPT 1/8 LH – NPT 1.1/2″ LH

VOELKEL Thread-cutting tools

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