5/16 x 18 UNC 1066-SFT HSS-E Spiral Flute Cutting Tap Steam Tempered - OSG
22204744
1066-SFT
Product features and benefits:
- HSS-E cobalt for toughness and wear resistance
- Steam-tempered finish helps reduce friction and material build-up
- Spiral flutes draw chips out of the hole for smoother tapping
-
Ideal for blind-hole threading in steels and other long-chipping materials

| Thread Type | UNC |
| Thread Diameter (TD) | 5/16 |
| Pitch (TPI) | 18 TPI |
|
Functional Length (LF) |
72.0mm |
| Thread Length (THLGTH) | 22.0mm |
| Usable Length (LU) | 35.0mm |
| Shank Diameter (DCON) | 8.00mm |
| Drive Size (DRVS) | 6.30mm |
| Pre-machined Hole Diameter (PHD) | 6.60mm |
22204744 5/16 X 18 UNC 1066-SFT HSS-E SPIRAL FLUTE CUTTING TAP STEAM TEMPERED - OSG