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    Indianapolis, IN 46203
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8-36 Tap, Modified Bottom, UNF thread, H4/H5, 4 flutes, HSS-E-PM, TiCN Coated, Form Tap

  • Item Code: 4378-4.166
  • 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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Shank Diameter (mm) 4.2672
Material HSS-E-PM
Overall Length 2.48
threadtype UNF
chamfer (decimal) Modified Bottom
Brand Guhring
H Limit H4/H5
Shank Dia (decimal) 0.1680
Number of flutes 4
Overall Length (decimal) 2.4800
Coating TiCN
Reach (decimal) 0.8268
Series 4378
Cutting Direction FORM
Diameter 8-36
Square Size (decimal) 0.1311