Sutton T276 7/8 x 14 TPI Spiral Flute Tap R45 VA DH - HSSE - Steam Oxide - DIN 2184-1
Available
The Sutton T276 is a spiral flute tap (R45 spiral, VA DH designation) for UNF threads, made from premium grade high speed steel (HSSE) with a blue steam-oxide finish. This listing covers 12 sizes from #6 x 40 TPI to 1 x 12 TPI.
The 45° right-hand spiral flute suits blind holes in long chipping materials: the high helix angle curls the chips and transports them back out of the hole. The tap cuts on reversal, so the flutes have rake on both front and back faces. The chamfer is Form C (2.5 x P), generally for blind holes.
The thread tolerance is 2B. The tap is built to DIN 2184-1.
Where this product is used
- Use in stainless steels and high strength steels up to 1000 N/mm2.
- Blind holes.
- Suitable for synchronous tapping in machine operations.
- Depths up to approx. 3 x d1.
Design features
- Premium grade high speed steel (HSSE). The vanadium grade gives high wear resistance and toughness for most tapping applications.
- Blue steam-oxide finish for ferrous metals; it helps prevent chip build-up on the cutting edges and carries lubricant well.
- 3 to 4 flutes, depending on size.
- 45° right-hand spiral flute.
- Form C chamfer, 2.5 x P.
- Thread tolerance 2B.
- 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| T276 0351 | #6 x 40 TPI | 40 | 2.9 | 56 | 6 | 20 | 4 | 3 | 6 | 3 |
| T276 0417 | #8 x 36 TPI | 36 | 3.5 | 63 | 7 | 21 | 4.5 | 3.4 | 6 | 3 |
| T276 0483 | #10 x 32 TPI | 32 | 4.1 | 70 | 8 | 25 | 6 | 4.9 | 8 | 3 |
| T276 0635 | 1/4 x 28 TPI | 28 | 5.5 | 80 | 10 | 30 | 7 | 5.5 | 8 | 3 |
| T276 0794 | 5/16 x 24 TPI | 24 | 6.9 | 90 | 13 | 35 | 8 | 6.2 | 9 | 3 |
| T276 0953 | 3/8 x 24 TPI | 24 | 8.5 | 100 | 15 | 35 | 10 | 8 | 11 | 3 |
| T276 1111 | 7/16 x 20 TPI | 20 | 9.8 | 100 | 15 | - | 8 | 6.2 | 8 | 3 |
| T276 1270 | 1/2 x 20 TPI | 20 | 11.5 | 110 | 18 | - | 9 | 7 | 10 | 3 |
| T276 1588 | 5/8 x 18 TPI | 18 | 14.5 | 110 | 20 | - | 12 | 9 | 12 | 3 |
| T276 1905 | 3/4 x 16 TPI | 16 | 17.5 | 125 | 25 | - | 14 | 11 | 14 | 4 |
| T276 2223 | 7/8 x 14 TPI | 14 | 20.5 | 140 | 28 | - | 18 | 14.5 | 17 | 4 |
| T276 2540 | 1 x 12 TPI | 12 | 23.5 | 160 | 32 | - | 18 | 14.5 | 17 | 4 |
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | T276 |
| Type | Spiral flute tap |
| Thread series | UNF |
| Material | HSSE |
| Finish | Steam Oxide |
| Designation | VA DH |
| Spiral | R45 (45° right-hand) |
| Chamfer | Form C / 2.5 x P |
| Thread tolerance | 2B |
| Standard | DIN 2184-1 |
| Flutes | 3 to 4 |
| Sizes in this listing | 12 sizes, #6 x 40 TPI to 1 x 12 TPI |
Related products
Related Sutton taps: T275 UNF Spiral Flute Tap R40 - HSSE - Bright - DIN 2184-1, T277 UNF Spiral Flute Tap R45 VA DH - HSSE - TiCN - DIN 2184-1, T442 UNF Spiral Flute Tap Bottoming - HSSE - Bright - ISO 529, T443 UNF Spiral Flute Tap Bottoming - HSSE - TiN - ISO 529, T692 UNF Spiral Flute Tap R50 Black Magic - PM-HSSE V3 - Hardlube - DIN 2184-1.
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12 / #1
Model Number: T2762540
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14 / 7/8
Model Number: T2762223
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16 / 3/4
Model Number: T2761905
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18 / 5/8
Model Number: T2761588
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20 / 1/2
Model Number: T2761270
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20 / 7/16
Model Number: T2761111
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24 / 3/8
Model Number: T2760953
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24 / 5/16
Model Number: T2760794
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28 / 1/4
Model Number: T2760635
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32 / #10
Model Number: T2760483
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36 / #8
Model Number: T2760417
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40 / #6
Model Number: T2760351
