Sutton T304 G 1/2 x 14 TPI Straight Flute Tap - HSSE - Bright - DIN 5156
Available
The Sutton T304 is a straight flute tap (N designation) for BSPF (G) threads, made from premium grade high speed steel (HSSE) with a bright finish. This listing covers 11 sizes from G 1/8 x 28 TPI to G 1-1/2 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 N designation is for normal, general purpose materials, with a normal rake angle and normal thread relief. 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
- General Purpose use in materials up to approx. 1000 N/mm2.
- Through & blind holes.
- Suitable for machine operations.
- Depths up to approx. 1 x d1.
Design features
- Premium grade high speed steel (HSSE). The vanadium grade gives high wear resistance and toughness for most tapping applications.
- Bright finish for general purpose applications.
- 4 to 6 flutes, depending on size.
- Form C chamfer, 2.5 x P.
- Thread standard ISO 228.
- The N designation is for normal, general purpose materials, with a normal rake angle and normal thread relief.
- 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 |
|---|---|---|---|---|---|---|---|---|---|
| T304 0973 | G 1/8 x 28 TPI | 28 | 8.8 | 90 | 20 | 7 | 5.5 | 8 | 4 |
| T304 1316 | G 1/4 x 19 TPI | 19 | 11.8 | 100 | 22 | 11 | 9 | 12 | 4 |
| T304 1666 | G 3/8 x 19 TPI | 19 | 15.3 | 100 | 22 | 12 | 9 | 12 | 4 |
| T304 2096 | G 1/2 x 14 TPI | 14 | 19 | 125 | 25 | 16 | 12 | 15 | 4 |
| T304 2291 | G 5/8 x 14 TPI | 14 | 21 | 125 | 25 | 18 | 14.5 | 17 | 4 |
| T304 2644 | G 3/4 x 14 TPI | 14 | 24.5 | 140 | 28 | 20 | 16 | 19 | 4 |
| T304 3020 | G 7/8 x 14 TPI | 14 | 28.5 | 150 | 28 | 22 | 18 | 21 | 4 |
| T304 3325 | G 1 x 11 TPI | 11 | 31 | 160 | 30 | 25 | 20 | 23 | 4 |
| T304 3790 | G 1-1/8 x 11 TPI | 11 | 35.5 | 170 | 30 | 28 | 22 | 25 | 4 |
| T304 4191 | G 1-1/4 x 11 TPI | 11 | 39.5 | 170 | 30 | 32 | 24 | 27 | 6 |
| T304 4780 | G 1-1/2 x 11 TPI | 11 | 45.5 | 190 | 32 | 36 | 29 | 32 | 6 |
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | T304 |
| Type | Straight flute tap |
| Thread series | BSPF (G) |
| Material | HSSE |
| Finish | Bright |
| Designation | N |
| Chamfer | Form C / 2.5 x P |
| Thread standard | ISO 228 |
| Standard | DIN 5156 |
| Flutes | 4 to 6 |
| Sizes in this listing | 11 sizes, G 1/8 x 28 TPI to G 1-1/2 x 11 TPI |
Related products
Related Sutton taps: T305 BSPF (G) Straight Flute Tap - HSSE - TiN - DIN 5156, T306 BSPF (G) Straight Flute Tap GG - HSSE - Plasma Nitride + Steam Oxide - DIN 5156, T307 BSPF (G) Straight Flute Tap GG - HSSE - TiCN - DIN 5156, T479 BSPF (G) Straight Flute Tap Pipe Taper - HSS - Bright - ISO 2284, T480 BSPF (G) Straight Flute Tap Pipe Intermediate - HSS - Bright - ISO 2284.
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G1
Model Number: T3043325
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G1 1/8
Model Number: T3043790
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G1 1/4
Model Number: T3044191
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G1 1/2
Model Number: T3044780
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G1/2
Model Number: T3042096
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G1/4
Model Number: T3041316
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G1/8
Model Number: T3040973
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G3/4
Model Number: T3042644
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G3/8
Model Number: T3041666
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G5/8
Model Number: T3042291
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G7/8
Model Number: T3043020
