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12-28 Tap, Modified Bottom, UNF thread, H6/H7, 4 flutes, HSS-E, TiCN Coated, Form Tap

  • Item Code: 3944-5.486
  • 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 3944
Brand Guhring
H Limit H6/H7
threadtype UNF
chamfer (decimal) Modified Bottom
Material HSS-E
Square Size (decimal) 0.165
Overall Length (decimal) 2.3820
Overall Length (mm) 60.5028
Shank Diameter (mm) 5.588
Diameter (mm) 5.484
Number of flutes 4
Reach (decimal) 1.0240
Coating TiCN
Cutting Direction FORM
Diameter 12-28