
■ Spiral Fluted Taps suitable for Alloy Steels and High E Carbon Steels. Due to improvement of chip ejection and reduction of tapping torque, SP is optimal for blind hole Oxide tapping of larger diameter. 1 1/8U~
High carbon steels Alloy steels
For icon explanation, refer to P.50
Segment:1C
| Size | Class | Code | Chamfer | L (inch) | ℓ (inch) | ℓn (inch) | ℓs (inch) | Ds (inch) | K (inch) | ℓk (inch) | No. of flutes | Type |
| For Unified Threads | ||||||||||||
| 1-8UNC | 2BX | SSU16XYEEXJ | 2.5P | 6.299 | 1.457 | - | 3.228 | 0.8 | 0.6 | 0.812 | 4 | 1 |
| 1 1/8-8UN | 2BX | SSU18XYEEXJ | 2.5P | 7.087 | 1.732 | - | 3.622 | 0.896 | 0.672 | 0.875 | 4 | 1 |
| 1 1/4-8UN | 2BX | SSU20XYEEXJ | 2.5P | 7.087 | 1.929 | - | 3.622 | 1.021 | 0.766 | 1 | 4 | 1 |
| 1 3/8-8UN | 2BX | SSU22XYEEXJ | 2.5P | 7.874 | 2.165 | - | 4.016 | 1.108 | 0.831 | 1.062 | 4 | 1 |
| 1 1/2-8UN | 2BX | SSU24XYEEXJ | 2.5P | 7.874 | 2.323 | - | 4.016 | 1.233 | 0.925 | 1.125 | 4 | 1 |