• 5318 Victory Drive
    Indianapolis, IN 46203
  • (800) 622-4824
  • www.haggard-stocking.com

1/2-20 Tap, Modified Bottom, UNJF thread, H3/H4, 4 flutes, HSS-E-PM, TiCN Coated, 15° Spiral Flute

  • Item Code: 1064-12.700
  • 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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Shank Diameter (mm) 9
Coating TiCN
H Limit H3/H4
Overall Length (mm) 100
Diameter 1/2-20
Helix Angle 15°
Series 1064
threadtype UNJF
Diameter (mm) 12.7
Square Size (decimal) 0.2752
Overall Length (decimal) 3.9370
Material HSS-E-PM
Number of flutes 4
Brand Guhring
chamfer (decimal) Modified Bottom