- 5318 Victory Drive
Indianapolis, IN 46203 - (800) 622-4824
- www.haggard-stocking.com
1/4-20 Tap, Modified Bottom, UNC thread, H7, 3 flutes, HSS-E-PM, TiN Coated, 40° Spiral Flute
- Item Code: 3980-6.350
- 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| Brand | Guhring |
|---|---|
| Overall Length (mm) | 63.5 |
| Shank Diameter (mm) | 6.477 |
| threadtype | UNC |
| Number of flutes | 3 |
| Coating | TiN |
| Diameter | 1/4-20 |
| Helix Angle | 40° |
| Square Size (decimal) | 0.1909 |
| H Limit | H7 |
| Series | 3980 |
| Diameter (mm) | 6.35 |
| Material | HSS-E-PM |
| Overall Length (decimal) | 2.5000 |
| chamfer (decimal) | Modified Bottom |
| Reach (decimal) | 1.1810 |