Description
HOLEX Pro Tap general-purpose blind-hole machine tap.
Sturdy design suitable for a wide spectrum of materials.
Improved HSS-E tool material with low-friction TiN coating.

Product Data
Product type: Blind-hole machine tap
Series: Pro Tap
Thread type: UNF uniform fine thread
Standard: ASME B1.1
Tool material: HSS-E
Coating: TiN
Tolerance: 2B
Chamfer form: C
Right-hand helix: 40deg
Maximum thread depth: 2.5xD
Thread size: 1/4-28
Threads per inch: 28
Thread Dia.: 6.35 mm
L: 80 mm
Dia. Ds: 7 mm
Square size: 5.5 mm
Tapping hole Dia.: 5.5 mm

Cutting Data
Alu plastics: 24
Alu: 25
Alu cast >10% Si: 10
Steel <500 N: 24
Steel <750 N: 20
Steel <900 N: 15
Steel <1100 N: 8
INOX <900 N: 8
GG(G): 20
CuZn: 15

Application
For UNF uniform fine threads ASME B1.1.