Sutton T791 1/2 x 13 TPI Spiral Flute Tap R15 Ti - PM-HSS Co - TiCN - DIN 2184-1
Available
The Sutton T791 is a spiral flute tap (R15 spiral, Ti designation) for UNJF threads, made from powder metallurgy, 8% cobalt high speed steel (PM-HSS Co) with a TiCN coating. This listing covers 4 sizes from 1/4 x 28 TPI to 1/2 x 13 TPI.
The 15° right-hand spiral flute suits blind holes in tough, short chipping materials, up to 1.5 x D in depth. The slow helix does not transport chips well, so it has no advantage in soft or long chipping materials, especially deeper than 1.5 x d1.
The tap is built to DIN 2184-1.
Where this product is used
- Blind holes.
Design features
- Powder metallurgy, 8% cobalt high speed steel (PM-HSS Co). The cobalt keeps strength and hardness at very high cutting temperatures, which suits heavy duty tapping of materials up to 45 HRC.
- TiCN coating for abrasive materials such as cast iron and aluminium alloys, and adhesive materials such as copper and copper-based alloys.
- 3 to 4 flutes, depending on size.
- 15° right-hand spiral flute.
- DIN 2184-1 construction.
Sizes
Dimensions are in millimetres. Item numbers are the Sutton catalogue numbers. If you are not sure which tapping drill to use, try our tap drill size selector.
| Item no. | Thread size | TPI | Tapping drill (mm) | l1 overall (mm) | l2 thread (mm) | l3 (mm) | d2 shank (mm) | sq square (mm) | l4 square length (mm) | Flutes |
|---|---|---|---|---|---|---|---|---|---|---|
| T791 0635 | 1/4 x 28 TPI | 28 | 5.6 | 80 | 10 | 30 | 7 | 5.5 | 8 | 3 |
| T791 0794 | 5/16 x 24 TPI | 24 | 7 | 90 | 13 | 34 | 8 | 6.2 | 9 | 3 |
| T791 0953 | 3/8 x 24 TPI | 24 | 8.6 | 100 | 15 | 35 | 10 | 7 | 10 | 3 |
| T791 1270 | 1/2 x 13 TPI | 13 | 11.6 | 110 | 18 | - | 9 | 7 | 10 | 4 |
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | T791 |
| Type | Spiral flute tap |
| Thread series | UNJF |
| Material | PM-HSS Co |
| Finish | TiCN |
| Designation | Ti |
| Spiral | R15 (15° right-hand) |
| Standard | DIN 2184-1 |
| Flutes | 3 to 4 |
| Sizes in this listing | 4 sizes, 1/4 x 28 TPI to 1/2 x 13 TPI |
Related products
Related Sutton taps: T787 UNJF Spiral Flute Tap L12 Ti - PM-HSS Co - TiCN - DIN 2184-1, T795 UNJF Spiral Flute Tap R10 Ni - PM-HSS Co - TiCN - DIN 2184-1.
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Sutton T791 UNJF Spiral Flute Tap R15 Ti - PM-HSS Co - TiCN - DIN 2184-1: 1/2 x 13 UNJF
SKU: A0131504 | Model: T7911270
