National Taper Pipe (NPT) Threads

  • Inserts are with neutral cutting edge or Positive 5 degree cutting edge (P) for soft materials and threadmilling deep holes
  • Coatings available include - Uncoated (-), TiN (C), TiAIN (Z), AlTiN (V)
  • Dimensions shown in Inches



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Item # Thread Form Pitch Flank Angle Rake Angle Clearance Angle Insert Size List Price
ATM-38A115NPT

Standard Taper Pipe (NPT)

11.5

60

Neutral

20

38A

ATM-38A115NPTC

Standard Taper Pipe (NPT)

11.5

60

Neutral

20

38A

ATM-38A115NPTP

Standard Taper Pipe (NPT)

11.5

60

Positive

20

38A

ATM-38A115NPTPC

Standard Taper Pipe (NPT)

11.5

60

Positive

20

38A

ATM-38A115NPTPV

Standard Taper Pipe (NPT)

11.5

60

Positive

20

38A

ATM-38A115NPTPZ

Standard Taper Pipe (NPT)

11.5

60

Positive

20

38A

ATM-38A115NPTV

Standard Taper Pipe (NPT)

11.5

60

Neutral

20

38A

ATM-38A115NPTZ

Standard Taper Pipe (NPT)

11.5

60

Neutral

20

38A

ATM-38A14NPT

Standard Taper Pipe (NPT)

14

60

Neutral

20

38A

ATM-38A14NPTC

Standard Taper Pipe (NPT)

14

60

Neutral

20

38A

ATM-38A14NPTP

Standard Taper Pipe (NPT)

14

60

Positive

20

38A

ATM-38A14NPTPC

Standard Taper Pipe (NPT)

14

60

Positive

20

38A

ATM-38A14NPTPV

Standard Taper Pipe (NPT)

14

60

Positive

20

38A

ATM-38A14NPTPZ

Standard Taper Pipe (NPT)

14

60

Positive

20

38A

ATM-38A14NPTV

Standard Taper Pipe (NPT)

14

60

Neutral

20

38A

ATM-38A14NPTZ

Standard Taper Pipe (NPT)

14

60

Neutral

20

38A

ATM-38A18NPT

Standard Taper Pipe (NPT)

18

60

Neutral

20

38A

ATM-38A18NPTC

Standard Taper Pipe (NPT)

18

60

Neutral

20

38A

ATM-38A18NPTP

Standard Taper Pipe (NPT)

18

60

Positive

20

38A

ATM-38A18NPTPC

Standard Taper Pipe (NPT)

18

60

Positive

20

38A

ATM-38A18NPTPV

Standard Taper Pipe (NPT)

18

60

Positive

20

38A

ATM-38A18NPTPZ

Standard Taper Pipe (NPT)

18

60

Positive

20

38A

ATM-38A18NPTV

Standard Taper Pipe (NPT)

18

60

Neutral

20

38A

ATM-38A18NPTZ

Standard Taper Pipe (NPT)

18

60

Neutral

20

38A

ATM-38A27NPT

Standard Taper Pipe (NPT)

27

60

Neutral

10

38A