Sutton T901SDT1 Metric Tap and Drill Set, 28 piece (Taper/Inter/Bottom) - HSS
Available
The Sutton T901SDT1 is a 28 piece metric tap and drill set: 7 sizes taps in M3, M4, M5, M6, M8, M10 and M12, each in taper, intermediate and bottoming chamfers (21 taps), plus the 7 matching tapping drills. The taps are HSS straight flute taps to ISO 529, with a bright finish and ISO 2 / 6H tolerance.
The straight flute geometry is designed for general purpose use in materials up to 1000 N/mm2, for through and blind holes, and for both hand and machine operation. Hole depths up to approximately 1 x d1. The shanks are reinforced with a square drive. Made from high speed steel (HSS) with a bright finish.
Where this product is used
- Tapping metric coarse (M) threads from M3 to M12 in general purpose materials up to 1000 N/mm2.
- Through and blind hole tapping, by hand or on a machine.
- One kit covering the common metric coarse sizes, M3 to M12.
Design features
- Straight flute, N designation: general purpose use.
- Suitable for materials up to 1000 N/mm2.
- Through and blind holes.
- Suitable for both hand and machine operations.
- Depths up to approximately 1 x d1.
- High speed steel (HSS), bright finish, ISO 2 / 6H tolerance, ISO 529.
What is in the set
Each of the 7 sizes is supplied as a taper, an intermediate and a bottoming tap (21 taps), with a matching tapping drill (7 drills). The taper tap starts the thread, the intermediate tap is the general purpose follow-up and the bottoming tap cuts the thread close to the bottom of a blind hole.
| Tap size | Pitch (mm) | Tapping drill (mm) | l1 (mm) | l2 (mm) | Shank d2 (mm) | Square (mm) | l4 (mm) | Flutes |
|---|---|---|---|---|---|---|---|---|
| M3 | 0.5 | 2.5 | 48 | 11 | 3.15 | 2.50 | 5 | 3 |
| M4 | 0.7 | 3.3 | 53 | 13 | 4.00 | 3.15 | 6 | 3 |
| M5 | 0.8 | 4.2 | 58 | 16 | 5.00 | 4.00 | 7 | 3 |
| M6 | 1.0 | 5.0 | 66 | 19 | 6.30 | 5.00 | 8 | 3 |
| M8 | 1.25 | 6.8 | 72 | 22 | 8.00 | 6.30 | 9 | 4 |
| M10 | 1.5 | 8.5 | 80 | 24 | 10.00 | 8.00 | 11 | 4 |
| M12 | 1.75 | 10.2 | 89 | 29 | 9.00 | 7.10 | 10 | 4 |
Using the tap and drill set
- Drill the hole with the matching tapping drill from the set before tapping.
- Start the tap square to the hole and turn forward, backing off regularly to break the chip.
- Use a cutting fluid suited to the material being tapped.
- Work through the taps in order: taper, then intermediate, then bottoming where the thread must run close to the bottom of a blind hole.
Key specifications
| Specification | Detail |
|---|---|
| Item number | T901 SDT1 |
| Pieces | 28 (21 taps, 7 drills) |
| Tap sizes | M3, M4, M5, M6, M8, M10 and M12 |
| Pitch | 0.5 to 1.75 mm (metric coarse) |
| Tap type | Straight flute, N designation |
| Chamfer | Taper, intermediate and bottoming |
| Tapping drills | 2.5, 3.3, 4.2, 5.0, 6.8, 8.5 and 10.2 mm |
| Material | High Speed Steel (HSS) |
| Finish | Bright |
| Standard | ISO 529, ISO 2 / 6H tolerance |
Related products
Related Sutton threading tools: Sutton T3850014 14 piece intermediate tap and drill set. Browse threading tools.
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