Sutton T431 7/16 x 20 TPI Straight Flute Tap Taper - HSS - Bright - ISO 529
Available
The Sutton T431 is a straight flute tap (taper chamfer) for UNF threads, made from high speed steel (HSS) with a bright finish. This listing covers 22 sizes from #3 x 56 TPI to 1-1/2 x 12 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 taper chamfer (Form A, 6 to 8 threads on the lead), for short through holes.
The tap is built to ISO 529: short machine tap construction.
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.
- 3 to 4 flutes, depending on size.
- Taper chamfer (Form A), for short through holes.
- ISO 529 construction, short machine tap 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| T431 0251 | #3 x 56 TPI | 56 | 2.1 | 45 | 10 | - | 2.8 | 2.24 | 5 | 3 |
| T431 0284 | #4 x 48 TPI | 48 | 2.35 | 48 | 15 | 14.5 | 3.15 | 2.5 | 5 | 3 |
| T431 0318 | #5 x 44 TPI | 44 | 2.65 | 48 | 15 | 15 | 3.15 | 2.5 | 5 | 3 |
| T431 0351 | #6 x 40 TPI | 40 | 2.9 | 50 | 17 | 17.5 | 3.55 | 2.8 | 5 | 3 |
| T431 0417 | #8 x 36 TPI | 36 | 3.5 | 53 | 13 | 17 | 4.5 | 3.55 | 6 | 3 |
| T431 0476 | 3/16 x 32 TPI | 32 | 4 | 58 | 16 | 22 | 5 | 4 | 7 | 3 |
| T431 0483 | #10 x 32 TPI | 32 | 4.1 | 58 | 16 | 22 | 5 | 4 | 7 | 3 |
| T431 0549 | #12 x 28 TPI | 28 | 4.6 | 62 | 17 | 23 | 5.6 | 4.5 | 7 | 3 |
| T431 0635 | 1/4 x 28 TPI | 28 | 5.5 | 66 | 19 | 25 | 6.3 | 5 | 8 | 3 |
| T431 0794 | 5/16 x 24 TPI | 24 | 6.9 | 72 | 22 | 30 | 8 | 6.3 | 9 | 4 |
| T431 0953 | 3/8 x 24 TPI | 24 | 8.5 | 80 | 24 | 33 | 10 | 8 | 11 | 4 |
| T431 1111 | 7/16 x 20 TPI | 20 | 9.8 | 85 | 25 | - | 8 | 6.3 | 9 | 4 |
| T431 1270 | 1/2 x 20 TPI | 20 | 11.5 | 89 | 29 | - | 9 | 7.1 | 10 | 4 |
| T431 1429 | 9/16 x 18 TPI | 18 | 12.8 | 95 | 30 | - | 11.2 | 9 | 12 | 4 |
| T431 1588 | 5/8 x 18 TPI | 18 | 14.5 | 102 | 32 | - | 12.5 | 10 | 13 | 4 |
| T431 1905 | 3/4 x 16 TPI | 16 | 17.5 | 112 | 37 | - | 14 | 11.2 | 14 | 4 |
| T431 2223 | 7/8 x 14 TPI | 14 | 20.5 | 118 | 38 | - | 16 | 12.5 | 16 | 4 |
| T431 2540 | 1 x 12 TPI | 12 | 23.5 | 130 | 45 | - | 18 | 14 | 18 | 4 |
| T431 2541 | 1 x 14 TPI | 14 | 24 | 130 | 45 | - | 18 | 14 | 18 | 4 |
| T431 2858 | 1-1/8 x 12 TPI | 12 | 26.5 | 138 | 48 | - | 20 | 16 | 20 | 4 |
| T431 3175 | 1-1/4 x 12 TPI | 12 | 29.5 | 151 | 51 | - | 22.4 | 18 | 22 | 4 |
| T431 3810 | 1-1/2 x 12 TPI | 12 | 36 | 170 | 60 | - | 28 | 22.4 | 26 | 4 |
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | T431 |
| Type | Straight flute tap |
| Thread series | UNF |
| Material | HSS |
| Finish | Bright |
| Chamfer | Taper (Form A) |
| Standard | ISO 529 |
| Flutes | 3 to 4 |
| Sizes in this listing | 22 sizes, #3 x 56 TPI to 1-1/2 x 12 TPI |
Related products
Related Sutton taps: T432 UNF Straight Flute Tap Intermediate - HSS - Bright - ISO 529, T433 UNF Straight Flute Tap Bottoming - HSS - Bright - ISO 529, T436 UNF Straight Flute Tap Left Hand Taper - HSS - Bright - ISO 529, T437 UNF Straight Flute Tap Left Hand Intermediate - HSS - Bright - ISO 529.
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12 / #1
Model Number: T4312540
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12 / 1 1/8
Model Number: T4312858
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12 / 1 1/4
Model Number: T4313175
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12 / 1 1/2
Model Number: T4313810
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14 / #1
Model Number: T4312541
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14 / 7/8
Model Number: T4312223
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16 / 3/4
Model Number: T4311905
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18 / 5/8
Model Number: T4311588
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18 / 9/16
Model Number: T4311429
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20 / 1/2
Model Number: T4311270
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20 / 7/16
Model Number: T4311111
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24 / 3/8
Model Number: T4310953
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24 / 5/16
Model Number: T4310794
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28 / 1/4
Model Number: T4310635
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28 / #12
Model Number: T4310549
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32 / 3/16
Model Number: T4310476
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32 / #10
Model Number: T4310483
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36 / #8
Model Number: T4310417
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40 / #6
Model Number: T4310351
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44 / #5
Model Number: T4310318
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48 / #4
Model Number: T4310284
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56 / #3
Model Number: T4310251
