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1/4-28 Tap, UNJF thread, H3/H4, 3 flutes, HSS-E-PM, TiCN Coated, 15° Spiral Flute

  • Item Code: 1064-6.35
  • Brand: Guhring
  • Unit Size: 1

Description

The UNJ thread standard (ASME B1.15) defines a system of threads for highly stressed applications requiring high fatigue strength. It was derived from a military specification (MIL-S- 8879). MIL-S-8879 was primarily thought of and used for aerospace fastener and threaded component applications. Guhring offers both unified UNJ and metric MJ tap options as stocked standards.

Tech Specs

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Coolant without
Diameter 1/4-28
Helix Angle 15°
Series 1064
threadtype UNJF
Diameter (mm) 6.35
Coating TiCN
H Limit H3/H4
Overall Length (mm) 80
Shank Diameter (mm) 7
Brand Guhring
Overall Length (decimal) 3.1496
Square Size (decimal) 0.1909
Number of flutes 3
Material HSS-E-PM
Reach (mm) 30