GARANT Master Tap INOX machine tap HSS-E-PM, TiAlN, UNC: 7/8-9

Article no.: 137857 7/8-9
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  • Thread type: UNC
  • Flank angle: 60
  • Tool material: HSS E PM
  • Standard: DIN 376
  • Tolerance class: 2BX

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Product details

Technical Data

Series Master Tap
Thread size 7/8-9 UNC
Coating TiAlN
Thread type UNC
Flank angle 60 degrees
Tool material HSS E PM
Standard DIN 376
Tolerance class 2BX
Taper lead form C
Helix angle 45 degrees
Shank Plain shank with h9
Through-coolant no
Application for type of drilling up to 2.5×D for blind holes
Cutting direction right-hand
Thread pitch 2,822 mm
Threads per inch 9
Thread ⌀ 22,23 mm
Overall length L 140 mm
Shank ⌀ Ds 18 mm
Shank square □ 14,5 mm
Tapping hole ⌀ 19,5 mm
Type of threading tool Machine tap for dynamic machining
Number of clamping slots 4
Colour ring blue
Number of cutting edges Z 4
Thread depth 55,56 mm
Type of product Tap

Identification & Classification

Article number 137857 7/8-9
EAN / GTIN 4062406210137
Manufacturer number 137857 7/8-9
Manufacturer Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Deutschland, www.hoffmann-group.com

Application Table

Aluminium (short chipping)
N
28
Steel < 750 N/mm²
P
23
Steel < 900 N/mm²
P
23
Steel < 1100 N/mm²
P
12
INOX < 900 N/mm²
M
11
INOX > 900 N/mm²
M
9
Oil
 
wet maximum
 

Description

Version:

High-performance tap, specially developed for good process reliability in stainless and acid-resistant steels and duplex materials. The 45° helix angle of the flutes facilitates chip formation especially in ductile austenitic CrNi steels.
  • HSS-E-PM tool material for maximum wear resistance.
  • The latest generation of TiAlN multi-layer coating.
  • Parameterised flute geometry for optimum chip formation and rigidity.

Application:

For UNC uniform coarse threads ASME − B1.1.

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