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M5X.8 Tap, Bottom, metric thread, D7/D8, 4 flutes, HSS-E, TiN Coated, Form Tap

  • Item Code: 3979-5.000
  • 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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H Limit D7/D8
Diameter (mm) 5.001
Cutting Direction FORM
Overall Length (mm) 60.5028
Shank Diameter (mm) 4.9276
Brand Guhring
Number of flutes 4
Coating TiN
Overall Length (decimal) 2.3820
Square Size (mm) 4.9
threadtype metric
chamfer (decimal) Bottom
Series 3979
Diameter M5X.8
Material HSS-E
Reach (decimal) 0.9450