Article no.: 133402 1/4-28

Machine tap 1/4-28

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In stock
77 pieces in stock
Brand: HOLEX
Thread type: UNF
Flank angle: 60 °
Tool material: HSS E
Standard: DIN 374
Tolerance class: 2B
Taper lead form: B
Shank: Plain shank with h9
Application for type of drilling: up to 3×D for through holes
Cutting direction: right-hand
Type of threading tool: Machine tap for conventional machining

Information

  • Thread type: UNF
  • Flank angle: 60 °
  • Tool material: HSS E
  • Standard: DIN 374
  • Tolerance class: 2B

Technical Data

Thread size 1/4-28 UNF
Coating uncoated
Thread type UNF
Flank angle 60 °
Tool material HSS E
Standard DIN 374
Tolerance class 2B
Taper lead form B
Shank Plain shank with h9
Through-coolant no
Application for type of drilling up to 3×D for through holes
Cutting direction right-hand
Thread pitch 0.907 mm
Threads per inch 28
Thread ⌀ 6.35 mm
Overall length L 80 mm
Shank ⌀ Ds 4.5 mm
Shank square □ 3.4 mm
Tapping hole ⌀ 5.5 mm
Type of threading tool Machine tap for conventional machining
Number of clamping slots 3
Colour ring without
Number of cutting edges Z 3
Thread depth 19.05 mm
Type of product Tap
Article number 133402 1/4-28
EAN / GTIN 4045197594778

Description

Version:

With spiral point.

Application:

For UNF uniform fine threads ASME − B1.1.

Application Table

Aluminium (short chipping)
N
13
Steel < 500 N/mm²
P
15
Steel < 750 N/mm²
P
15
Oil
 
wet maximum
 

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