Description
Blind-hole machine tap for UNF threads.
Application
For UNF uniform fine threads ASME B1.1.
Features
HSS-E-PM.
TiAlN coating.
Optimised flute geometry.
Advantages
Reliable blind-hole tapping.
Product Data
Product type: Blind-Hole Machine Tap UNF
Article family: 138007
Thread size: 1/2-20
Thread form: 40°/45° right-hand helix
Tolerance: 2B
Tool material: HSS-E-PM
Coating / surface: TiAlN
Dimensions
Overall length L: 100 mm
Shank diameter Ds: 9 mm
Square: 7 mm
Recommended tapping-hole diameter: 11.5 mm
Threads per inch: 20
Thread diameter: 12.7 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