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External & internal designation matrix

NPT Threading

Compare matching external and internal thread turning insert designations by standard, insert size, pitch, and handedness. Select the exact designation when requesting a quotation.

Designations: 38
Available grade: FH

NPT ExternalThreading carbide threading insert catalog 3D reference — Catalog 3D reference

Selection matrix

Match external and internal inserts

A dash means the source catalog does not list a matching designation for that side. No counterpart is inferred.

Standard	Size	Pitch	Hand	External designation	Internal designation
NPT	06	27	Left	—	06NL27 NPT
NPT	06	27	Right	—	06NR27 NPT
NPT	08	18	Left	—	08NL18 NPT
NPT	08	18	Right	—	08NR18 NPT
NPT	08	27	Left	—	08NL27 NPT
NPT	08	27	Right	—	08NR27 NPT
NPT	11	14	Left	11EL14 NPT	11NL14 NPT
NPT	11	14	Right	11ER14 NPT	11NR14 NPT
NPT	11	18	Left	11EL18 NPT	11NL18 NPT
NPT	11	18	Right	11ER18 NPT	11NR18 NPT
NPT	11	27	Left	11EL27 NPT	11NL27 NPT
NPT	11	27	Right	11ER27 NPT	11NR27 NPT
NPT	16	8	Left	16EL8 NPT	16NL8 NPT
NPT	16	8	Right	16ER8 NPT	16NR8 NPT
NPT	16	11.5	Left	16EL11.5 NPT	16NL11.5 NPT
NPT	16	11.5	Right	16ER11.5 NPT	16NR11.5 NPT
NPT	16	14	Left	16EL14 NPT	16NL14 NPT
NPT	16	14	Right	16ER14 NPT	16NR14 NPT
NPT	16	18	Left	16EL18 NPT	16NL18 NPT
NPT	16	18	Right	16ER18 NPT	16NR18 NPT
NPT	16	27	Left	16EL27 NPT	16NL27 NPT
NPT	16	27	Right	16ER27 NPT	16NR27 NPT

Standard / size: NPT · 06
Pitch / hand: 27 · Left

External

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Internal

Standard / size: NPT · 06
Pitch / hand: 27 · Right

External

—

Internal

Standard / size: NPT · 08
Pitch / hand: 18 · Left

External

—

Internal

Standard / size: NPT · 08
Pitch / hand: 18 · Right

External

—

Internal

Standard / size: NPT · 08
Pitch / hand: 27 · Left

External

—

Internal

Standard / size: NPT · 08
Pitch / hand: 27 · Right

External

—

Internal

Standard / size: NPT · 11
Pitch / hand: 14 · Left

External

Internal

Standard / size: NPT · 11
Pitch / hand: 14 · Right

External

Internal

Standard / size: NPT · 11
Pitch / hand: 18 · Left

External

Internal

Standard / size: NPT · 11
Pitch / hand: 18 · Right

External

Internal

Standard / size: NPT · 11
Pitch / hand: 27 · Left

External

Internal

Standard / size: NPT · 11
Pitch / hand: 27 · Right

External

Internal

Standard / size: NPT · 16
Pitch / hand: 8 · Left

External

Internal

Standard / size: NPT · 16
Pitch / hand: 8 · Right

External

Internal

Standard / size: NPT · 16
Pitch / hand: 11.5 · Left

External

Internal

Standard / size: NPT · 16
Pitch / hand: 11.5 · Right

External

Internal

Standard / size: NPT · 16
Pitch / hand: 14 · Left

External

Internal

Standard / size: NPT · 16
Pitch / hand: 14 · Right

External

Internal

Standard / size: NPT · 16
Pitch / hand: 18 · Left

External

Internal

Standard / size: NPT · 16
Pitch / hand: 18 · Right

External

Internal

Standard / size: NPT · 16
Pitch / hand: 27 · Left

External

Internal

Standard / size: NPT · 16
Pitch / hand: 27 · Right

External

Internal

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