Sutton T481 1/8 x 28 TPI Straight Flute Tap Pipe Bottoming - HSS - Bright - ISO 2284
Available
The Sutton T481 is a straight flute tap (bottoming chamfer) for BSPF (G) threads, made from high speed steel (HSS) with a bright finish. This listing covers 12 sizes from 1/8 x 28 TPI to 2 x 11 TPI.
Straight flutes suit through or blind holes, but they hold only a small amount of chips and do not transport them axially, so deep holes are best avoided except in short chipping materials. The tap has a bottoming chamfer (Form E, 1.5 to 2 threads on the lead), for blind holes with very short thread run-out.
The tap is built to ISO 2284.
Where this product is used
- General purpose use.
- Suitable for materials up to 1000 N/mm2.
- Through & blind holes.
- Suitable for both hand and machine operations.
- Depths up to approx. 1 x d1.
Design features
- High speed steel (HSS). Standard tool material for most common applications.
- Bright finish for general purpose applications.
- 4 to 6 flutes, depending on size.
- Bottoming chamfer (Form E), for blind holes with very short thread run-out.
- ISO 2284 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) | d2 shank (mm) | sq square (mm) | l4 square length (mm) | Flutes |
|---|---|---|---|---|---|---|---|---|---|
| T481 0973 | 1/8 x 28 TPI | 28 | 8.8 | 59 | 15 | 8 | 6.3 | 9 | 4 |
| T481 1316 | 1/4 x 19 TPI | 19 | 11.8 | 67 | 19 | 10 | 8 | 11 | 4 |
| T481 1666 | 3/8 x 19 TPI | 19 | 15.3 | 75 | 21 | 12.5 | 10 | 13 | 4 |
| T481 2096 | 1/2 x 14 TPI | 14 | 19 | 87 | 26 | 16 | 12.5 | 16 | 4 |
| T481 2291 | 5/8 x 14 TPI | 14 | 21 | 91 | 26 | 18 | 14 | 18 | 4 |
| T481 2644 | 3/4 x 14 TPI | 14 | 24.5 | 96 | 28 | 20 | 16 | 20 | 4 |
| T481 3020 | 7/8 x 14 TPI | 14 | 28.5 | 102 | 29 | 22.4 | 18 | 22 | 4 |
| T481 3325 | 1 x 11 TPI | 11 | 31 | 109 | 33 | 25 | 20 | 24 | 4 |
| T481 4191 | 1-1/4 x 11 TPI | 11 | 39.5 | 119 | 36 | 31.5 | 25 | 28 | 4 |
| T481 4780 | 1-1/2 x 11 TPI | 11 | 45.5 | 125 | 37 | 35.5 | 28 | 31 | 4 |
| T481 5375 | 1-3/4 x 11 TPI | 11 | 51.5 | 132 | 39 | 35.5 | 28 | 31 | 6 |
| T481 5961 | 2 x 11 TPI | 11 | 57.5 | 140 | 41 | 40 | 31.5 | 34 | 6 |
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | T481 |
| Type | Straight flute tap |
| Thread series | BSPF (G) |
| Material | HSS |
| Finish | Bright |
| Chamfer | Bottoming (Form E) |
| Standard | ISO 2284 |
| Flutes | 4 to 6 |
| Sizes in this listing | 12 sizes, 1/8 x 28 TPI to 2 x 11 TPI |
Related products
Related Sutton taps: T479 BSPF (G) Straight Flute Tap Pipe Taper - HSS - Bright - ISO 2284, T480 BSPF (G) Straight Flute Tap Pipe Intermediate - HSS - Bright - ISO 2284, T482 BSPF (G) Straight Flute Tap Pipe Intermediate - HSS - TiN - ISO 2284, T483 BSPF (G) Straight Flute Tap Pipe Bottoming - HSS - TiN - ISO 2284, T307 BSPF (G) Straight Flute Tap GG - HSSE - TiCN - DIN 5156.
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G1
Model Number: T4813325
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G1 1/4
Model Number: T4814191
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G1 1/2
Model Number: T4814780
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G1 3/4
Model Number: T4815375
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G1/2
Model Number: T4812096
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G1/4
Model Number: T4811316
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G1/8
Model Number: T4810973
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G2
Model Number: T4815961
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G3/4
Model Number: T4812644
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G3/8
Model Number: T4811666
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G5/8
Model Number: T4812291
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G7/8
Model Number: T4813020
