Sutton T145 M12 x 1.75 Spiral Point Tap H - PM-HSS Co - Steam Oxide - DIN 376
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The Sutton T145 is a spiral point (gun) tap (H designation) for metric coarse (M) threads, made from powder metallurgy, 8% cobalt high speed steel (PM-HSS Co) with a blue steam-oxide finish. This listing covers 5 sizes from M12 x 1.75 to M20 x 2.5.
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 H designation is for hard materials that form short chips, with a low rake angle and low thread relief. The chamfer is Form B (4.5 x P), for through holes in medium and long chipping materials.
The thread tolerance is 6HX. The tap is built to DIN 376: reduced shank with square drive.
Where this product is used
- Suitable for harder materials up to 45 HRC.
- Through holes.
- Depths up to 3 x d1.
Design features
- Powder metallurgy, 8% cobalt high speed steel (PM-HSS Co). The cobalt keeps strength and hardness at very high cutting temperatures, which suits heavy duty tapping of materials up to 45 HRC.
- Blue steam-oxide finish for ferrous metals; it helps prevent chip build-up on the cutting edges and carries lubricant well.
- 3 to 4 flutes, depending on size.
- Form B chamfer, 4.5 x P.
- Thread tolerance 6HX.
- The H designation is for hard materials that form short chips, with a low rake angle and low thread relief.
- DIN 376 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 | Pitch (mm) | Tapping drill (mm) | l1 overall (mm) | l2 thread (mm) | d2 shank (mm) | sq square (mm) | l4 square length (mm) | Flutes |
|---|---|---|---|---|---|---|---|---|---|
| T145 1200 | M12 x 1.75 | 1.75 | 10.2 | 110 | 28 | 9 | 7 | 10 | 3 |
| T145 1400 | M14 x 2 | 2 | 12 | 110 | 30 | 11 | 9 | 12 | 3 |
| T145 1600 | M16 x 2 | 2 | 14 | 110 | 32 | 12 | 9 | 12 | 4 |
| T145 1800 | M18 x 2.5 | 2.5 | 15.5 | 125 | 34 | 14 | 11 | 14 | 4 |
| T145 2000 | M20 x 2.5 | 2.5 | 17.5 | 140 | 34 | 16 | 12 | 15 | 4 |
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | T145 |
| Type | Spiral point (gun) tap |
| Thread series | Metric coarse (M) |
| Material | PM-HSS Co |
| Finish | Steam Oxide |
| Designation | H |
| Chamfer | Form B / 4.5 x P |
| Thread tolerance | 6HX |
| Standard | DIN 376 |
| Flutes | 3 to 4 |
| Sizes in this listing | 5 sizes, M12 x 1.75 to M20 x 2.5 |
Related products
Related Sutton taps: T144 Metric Coarse Spiral Point Tap H - PM-HSS Co - Steam Oxide - DIN 371, T146 Metric Coarse Spiral Point Tap H - PM-HSS Co - TiCN - DIN 371, T147 Metric Coarse Spiral Point Tap H - PM-HSS Co - TiCN - DIN 376, T148 Metric Coarse Spiral Point Tap H IK - PM-HSS Co - TiCN - DIN 371, T149 Metric Coarse Spiral Point Tap H IK - PM-HSS Co - TiCN - DIN 376.
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Sutton T145 Metric Coarse Spiral Point Tap H - PM-HSS Co - Steam Oxide - DIN 376: MF3
SKU: A0013058 | Model: T1451200
Diameter (metric) MF3. Features
The Sutton T145 is a spiral point (gun) tap (H designation) for metric coarse (M) threads, made from powder metallurgy, 8% cobalt high speed steel (PM-HSS Co) with a blue steam-oxide finish. This listing covers 5 sizes from M12 x 1.75 to M20 x 2.5.
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 H designation is for hard materials that form short chips, with a low rake angle and low thread relief. The chamfer is Form B (4.5 x P), for through holes in medium and long chipping materials.
The thread tolerance is 6HX. The tap is built to DIN 376: reduced shank with square drive.