Description
Machine tap for tapered NPT pipe threads.
Application
For tapered pipe threads with sealant.
Features
HSS-E-PM.
AlTiX coating.
Tapered thread profile.
Advantages
Reliable tapered pipe-thread tapping.
Product Data
Product type: Machine Tap For Tapered NPT Pipe Threads
Article family: 138105
Thread size: 1/4-18
Thread form: NPT taper 1:16
Tolerance: ANSI B1.20.1
Tool material: HSS-E-PM
Coating / surface: AlTiX
Dimensions
Overall length L: 100 mm
Shank diameter Ds: 11 mm
Square: 9 mm
Recommended tapping-hole diameter: 11.1 mm
Tapping hole B: 10.75 mm
Thread gauge diameter: 11.36 mm
Minimum depth: 17.5 mm
Cutting Data
Steel <500 N/mm²: 30 m/min
Steel <750 N/mm²: 25 m/min
Steel <900 N/mm²: 20 m/min
INOX: 10 m/min
ISO Code
Aluminium and plastics: N
Aluminium: N
Aluminium cast >10% Si: N
Steel <500 N/mm²: P
Steel <750 N/mm²: P
Steel <900 N/mm²: P
Steel <1100 N/mm²: P
Steel <1400 N/mm²: P
Hardened steel: H
INOX: M
Titanium: S
Cast iron: K
Copper alloys: N
Graphite / GRP / CRP: N
Notes
Pre-drill a plain hole without a reamer or ream 1:16 for maximum process reliability.