- 5318 Victory Drive
Indianapolis, IN 46203 - (800) 622-4824
- www.haggard-stocking.com
1/4-28 Tap, UNF thread, H7, 3 flutes, HSS-E-PM, TiN Coated, 40° Spiral Flute
- Item Code: 3981-6.35
- 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
Back To Top| Series | 3981 |
|---|---|
| Coating | TiN |
| Coolant | without |
| Square Size (decimal) | 0.1909 |
| Number of flutes | 3 |
| Helix Angle | 40° |
| Diameter | 1/4-28 |
| Material | HSS-E-PM |
| Shank Diameter (mm) | 6.477 |
| H Limit | H7 |
| Overall Length (mm) | 63.5 |
| Diameter (mm) | 6.35 |
| Overall Length (decimal) | 2.5000 |
| Brand | Guhring |
| threadtype | UNF |
| Reach (decimal) | 1.1810 |