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

12-28 Tap, Modified Bottom, UNF thread, H11, 3 flutes, HSS-E, TiN Coated, 40° Spiral Flute

  • Item Code: 3985-5.486
  • Brand: Guhring
  • Unit Size: 1

Description

Oversized taps are taps that are typically +0.003''/+0.005'' larger than the standard pitch diameter. An H7 thread limit tap is +0.003'' oversize from the basic pitch diameter while the H11 tap is +0.005'' oversize. Oversize taps are typically used for threading holes that will be subsequently plated or heat treated after tapping. Guhring offers TiN coated plug and bottoming style oversize taps as stocked standards.

Tech Specs

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Coating TiN
Material HSS-E
Overall Length (decimal) 2.3820
Series 3985
Diameter 12-28
threadtype UNF
Brand Guhring
chamfer (decimal) Modified Bottom
Helix Angle 40°
H Limit H11
Number of flutes 3
Overall Length (mm) 60.5028
Shank Diameter (mm) 5.588
Square Size (decimal) 0.165
Diameter (mm) 5.484
Reach (decimal) 1.0240