Sutton T309 M1 x 0.25 Forming Tap No Groove - HSSE - Bright - DIN 2174
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The Sutton T309 is a forming (roll) tap with no groove for metric coarse (M) threads, made from premium grade high speed steel (HSSE) with a bright finish. This listing covers 18 sizes from M1 x 0.25 to M10 x 1.5.
A forming tap has no flutes and does not cut: it rolls the thread by displacing the metal, so it makes no chips and suits blind and through holes. Forming needs more machine power because of the torque involved, the rolled thread is stronger than a cut thread because the grain structure stays uniform through the thread form, and the tapping drill size differs from that of a cutting tap. The chamfer is Form C (2.5 x P).
The thread tolerance is 6HX. The tap is built to DIN 2174.
Where this product is used
- Suitable for materials with >10% elongation.
- Through or blind holes.
- Depths up to 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.
- Form C chamfer, 2.5 x P.
- Thread tolerance 6HX.
- DIN 2174 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 | Pitch (mm) | Tapping drill (mm) | l1 overall (mm) | l2 thread (mm) | l3 (mm) | d2 shank (mm) | sq square (mm) | l4 square length (mm) |
|---|---|---|---|---|---|---|---|---|---|
| T309 0100 | M1 x 0.25 | 0.25 | 0.9 | 40 | 6 | - | 2.5 | 2.1 | 3 |
| T309 0120 | M1.2 x 0.25 | 0.25 | 1.1 | 40 | 6 | - | 2.5 | 2.1 | 3 |
| T309 0140 | M1.4 x 0.3 | 0.3 | 1.28 | 40 | 6 | - | 2.5 | 2.1 | 3 |
| T309 0160 | M1.6 x 0.35 | 0.35 | 1.45 | 40 | 7 | - | 2.5 | 2.1 | 3 |
| T309 0170 | M1.7 x 0.35 | 0.35 | 1.55 | 40 | 8 | - | 2.5 | 2.1 | 3 |
| T309 0180 | M1.8 x 0.35 | 0.35 | 1.65 | 40 | 8 | - | 2.5 | 2.1 | 3 |
| T309 0200 | M2 x 0.4 | 0.4 | 1.8 | 45 | 8 | - | 2.8 | 2.1 | 5 |
| T309 0220 | M2.2 x 0.45 | 0.45 | 2 | 45 | 8 | - | 2.8 | 2.1 | 5 |
| T309 0230 | M2.3 x 0.4 | 0.4 | 2.1 | 45 | 9 | - | 2.8 | 2.1 | 5 |
| T309 0250 | M2.5 x 0.45 | 0.45 | 2.3 | 50 | 9 | - | 2.8 | 2.1 | 5 |
| T309 0260 | M2.6 x 0.45 | 0.45 | 2.4 | 50 | 9 | - | 2.8 | 2.1 | 5 |
| T309 0300 | M3 x 0.5 | 0.5 | 2.8 | 56 | 11 | 18 | 3.5 | 2.7 | 6 |
| T309 0350 | M3.5 x 0.6 | 0.6 | 3.2 | 56 | 13 | 20 | 4 | 3 | 6 |
| T309 0400 | M4 x 0.7 | 0.7 | 3.7 | 63 | 13 | 21 | 4.5 | 3.4 | 6 |
| T309 0500 | M5 x 0.8 | 0.8 | 4.6 | 70 | 16 | 25 | 6 | 4.9 | 8 |
| T309 0600 | M6 x 1 | 1 | 5.5 | 80 | 19 | 30 | 6 | 4.9 | 8 |
| T309 0800 | M8 x 1.25 | 1.25 | 7.4 | 90 | 22 | 35 | 8 | 6.2 | 9 |
| T309 1000 | M10 x 1.5 | 1.5 | 9.3 | 100 | 24 | 39 | 10 | 8 | 11 |
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | T309 |
| Type | Forming (roll) tap with no groove |
| Thread series | Metric coarse (M) |
| Material | HSSE |
| Finish | Bright |
| Designation | N |
| Chamfer | Form C / 2.5 x P |
| Thread tolerance | 6HX |
| Standard | DIN 2174 |
| Sizes in this listing | 18 sizes, M1 x 0.25 to M10 x 1.5 |
Related products
Related Sutton taps: T311 Metric Coarse Forming Tap No Groove - HSSE - Bright - DIN 2174, T313 Metric Coarse Forming Tap No Groove - HSSE - TiN - DIN 2174, T315 Metric Coarse Forming Tap No Groove - HSSE - TiN - DIN 2174, T319 Metric Coarse Forming Tap Multi Coolant Groove - HSSE - TiCN - DIN 2174, T319 M1.6 x 0.35 Metric Coarse Forming Tap Multi Coolant Groove - HSSE - TiCN - DIN 2174.
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Sutton T309 Metric Coarse Forming Tap No Groove - HSSE - Bright - DIN 2174: M1
SKU: A0014408 | Model: T3090100
Diameter (metric) M1. Features
The Sutton T309 is a forming (roll) tap with no groove for metric coarse (M) threads, made from premium grade high speed steel (HSSE) with a bright finish. This listing covers 18 sizes from M1 x 0.25 to M10 x 1.5.
A forming tap has no flutes and does not cut: it rolls the thread by displacing the metal, so it makes no chips and suits blind and through holes. Forming needs more machine power because of the torque involved, the rolled thread is stronger than a cut thread because the grain structure stays uniform through the thread form, and the tapping drill size differs from that of a cutting tap. The chamfer is Form C (2.5 x P).
The thread tolerance is 6HX. The tap is built to DIN 2174.