Sutton T285 G 7/8 x 14 TPI Spiral Flute Tap R45 VA - HSSE - TiCN - DIN 5156
Available
The Sutton T285 is a spiral flute tap (R45 spiral, VA designation) for BSPF (G) threads, made from premium grade high speed steel (HSSE) with a TiCN coating. This listing covers 8 sizes from G 1/8 x 28 TPI to G 1 x 11 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 VA designation is for stainless and tough steels, with a high rake angle and thread relief, so the chip flows continuously in an axial direction. The chamfer is Form C (2.5 x P), generally for blind holes.
The thread standard is ISO 228. The tap is built to DIN 5156: reduced shank with square drive.
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.
- TiCN coating for abrasive materials such as cast iron and aluminium alloys, and adhesive materials such as copper and copper-based alloys.
- 4 to 5 flutes, depending on size.
- 45° right-hand spiral flute.
- Form C chamfer, 2.5 x P.
- Thread standard ISO 228.
- The VA designation is for stainless and tough steels, with a high rake angle and thread relief, so the chip flows continuously in an axial direction.
- DIN 5156 construction, reduced shank with square drive.
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) | d2 shank (mm) | sq square (mm) | l4 square length (mm) | Flutes |
|---|---|---|---|---|---|---|---|---|---|
| T285 0973 | G 1/8 x 28 TPI | 28 | 8.8 | 90 | 20 | 7 | 5.5 | 8 | 4 |
| T285 1316 | G 1/4 x 19 TPI | 19 | 11.8 | 100 | 22 | 11 | 9 | 12 | 4 |
| T285 1666 | G 3/8 x 19 TPI | 19 | 15.3 | 100 | 22 | 12 | 9 | 12 | 5 |
| T285 2096 | G 1/2 x 14 TPI | 14 | 19 | 125 | 25 | 16 | 12 | 15 | 5 |
| T285 2291 | G 5/8 x 14 TPI | 14 | 21 | 125 | 25 | 18 | 14.5 | 17 | 5 |
| T285 2644 | G 3/4 x 14 TPI | 14 | 24.5 | 140 | 28 | 20 | 16 | 19 | 5 |
| T285 3020 | G 7/8 x 14 TPI | 14 | 28.5 | 150 | 28 | 22 | 18 | 21 | 5 |
| T285 3325 | G 1 x 11 TPI | 11 | 31 | 160 | 30 | 25 | 20 | 23 | 5 |
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | T285 |
| Type | Spiral flute tap |
| Thread series | BSPF (G) |
| Material | HSSE |
| Finish | TiCN |
| Designation | VA |
| Spiral | R45 (45° right-hand) |
| Chamfer | Form C / 2.5 x P |
| Thread standard | ISO 228 |
| Standard | DIN 5156 |
| Flutes | 4 to 5 |
| Sizes in this listing | 8 sizes, G 1/8 x 28 TPI to G 1 x 11 TPI |
Related products
Related Sutton taps: T284 BSPF (G) Spiral Flute Tap R45 VA - HSSE - Steam Oxide - DIN 5156, T282 BSPF (G) Spiral Flute Tap R40 - HSSE - Steam Oxide - DIN 5156, T281 BSPF (G) Spiral Flute Tap R40 - HSSE - Bright - DIN 5156, T279 BSPF (G) Spiral Flute Tap R15 - HSSE - TiN - DIN 5156, T278 BSPF (G) Spiral Flute Tap R15 - HSSE - Bright - DIN 5156.
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G1
Model Number: T2853325
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G1/2
Model Number: T2852096
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G1/4
Model Number: T2851316
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G1/8
Model Number: T2850973
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G3/4
Model Number: T2852644
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G3/8
Model Number: T2851666
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G5/8
Model Number: T2852291
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G7/8
Model Number: T2853020
