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6-40 Tap, Modified Bottom, UNF thread, H5/H6, 4 flutes, HSS-E-PM, TiCN Coated, Form Tap

  • Item Code: 4378-3.505
  • Brand: Guhring
  • Unit Size: 1

Description

Not all threads are made by cutting. In large production runs or where great strength is required, the threads may be rolled (male) or formed (female).

In the case of the tap there are no cutting edges but instead the tap is lobed. The tap is forced into the hole and the material is deformed by the lobes into the required thread form. Formed threads have the advantage of increased strength (the material flows into shape via cold forming) along with reduced manufacturing time.

Tech Specs

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Series 4378
Square Size (decimal) 0.11
chamfer (decimal) Modified Bottom
Cutting Direction FORM
Overall Length 2.205
Number of flutes 4
Shank Dia (decimal) 0.1410
Diameter 6-40
H Limit H5/H6
Brand Guhring
Material HSS-E-PM
threadtype UNF
Coating TiCN
Overall Length (decimal) 2.2050
Reach (decimal) 0.7480
Shank Diameter (mm) 3.5814