Sutton T439 3/4 x 16 TPI Spiral Point Tap Intermediate - HSSE - Bright - ISO 529
Available
The Sutton T439 is a spiral point (gun) tap (intermediate chamfer) for UNF threads, made from premium grade high speed steel (HSSE) with a bright finish. This listing covers 8 sizes from #10 x 32 TPI to 3/4 x 16 TPI.
The gun (spiral point) nose curls the chip forward, ahead of the tap and out of the hole, so chip clogging is avoided and coolant can flow without problems. It suits through holes. The tap has a intermediate chamfer (Form D, 3.5 to 5 threads on the lead), generally for 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 holes.
- 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.
- Bright finish for general purpose applications.
- 3 to 4 flutes, depending on size.
- Intermediate chamfer (Form D), generally for 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 | Limit |
|---|---|---|---|---|---|---|---|---|---|---|---|
| T439 0483 | #10 x 32 TPI | 32 | 4.1 | 58 | 16 | 22 | 5 | 4 | 7 | 3 | GH3 |
| T439 0635 | 1/4 x 28 TPI | 28 | 5.5 | 66 | 19 | 25 | 6.3 | 5 | 8 | 3 | GH3 |
| T439 0794 | 5/16 x 24 TPI | 24 | 6.9 | 72 | 22 | 30 | 8 | 6.3 | 9 | 3 | GH4 |
| T439 0953 | 3/8 x 24 TPI | 24 | 8.5 | 80 | 24 | 33 | 10 | 8 | 11 | 3 | GH4 |
| T439 1111 | 7/16 x 20 TPI | 20 | 9.8 | 85 | 25 | - | 8 | 6.3 | 9 | 3 | GH5 |
| T439 1270 | 1/2 x 20 TPI | 20 | 11.5 | 89 | 29 | - | 9 | 7.1 | 10 | 3 | GH5 |
| T439 1588 | 5/8 x 18 TPI | 18 | 12.8 | 102 | 32 | - | 12.5 | 10 | 13 | 3 | GH5 |
| T439 1905 | 3/4 x 16 TPI | 16 | 17.5 | 112 | 37 | - | 14 | 11.2 | 14 | 4 | GH6 |
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | T439 |
| Type | Spiral point (gun) tap |
| Thread series | UNF |
| Material | HSSE |
| Finish | Bright |
| Chamfer | Intermediate (Form D) |
| Standard | ISO 529 |
| Flutes | 3 to 4 |
| Sizes in this listing | 8 sizes, #10 x 32 TPI to 3/4 x 16 TPI |
Related products
Related Sutton taps: T440 UNF Spiral Point Tap Intermediate - HSSE - Steam Oxide - ISO 529, T441 UNF Spiral Point Tap Intermediate - HSSE - TiN - ISO 529, T694 UNF Spiral Point Tap Black Magic - PM-HSSE V3 - Hardlube - DIN 2184-1, T698 UNF Spiral Point Tap VA PM - PM-HSSE V3 - TiCN - DIN 2184-1, T177 UNF Spiral Point Tap VA - HSSE - TiCN - DIN 2184-1.
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Sutton T439 UNF Spiral Point Tap Intermediate - HSSE - Bright - ISO 529: 16 / 3/4
SKU: A0015405 | Model: T4391905
TPI 16, Diameter (inch) 3/4. Features
The Sutton T439 is a spiral point (gun) tap (intermediate chamfer) for UNF threads, made from premium grade high speed steel (HSSE) with a bright finish. This listing covers 8 sizes from #10 x 32 TPI to 3/4 x 16 TPI.
The gun (spiral point) nose curls the chip forward, ahead of the tap and out of the hole, so chip clogging is avoided and coolant can flow without problems. It suits through holes. The tap has a intermediate chamfer (Form D, 3.5 to 5 threads on the lead), generally for through holes.
The tap is built to ISO 529: short machine tap construction.