Sutton T688 M12 x 1.75 Spiral Point Tap Black Magic - PM-HSSE V3 - Hardlube - DIN 376
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The Sutton T688 is a spiral point (gun) tap (UNI designation, Black Magic range) for metric coarse (M) threads, made from powder metallurgy, vanadium grade high speed steel (PM-HSSE V3) with a Hardlube (TiAlN + WC/C) coating. 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 UNI designation is for normal, general purpose materials, with a normal rake angle and high thread relief, in powder metal high speed steel. 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
- Universal high performance tapping.
- Use in stainless steels and high strength steels up to 850 N/mm2.
- Through holes up to 3 x d1.
- Suitable for synchronous tapping in machine operations.
Design features
- Powder metallurgy, vanadium grade high speed steel (PM-HSSE V3). The very fine and uniform grain structure allows high hardness while keeping good toughness, for materials up to 40 HRC and difficult-to-machine materials such as stainless steels.
- Hardlube (TiAlN + WC/C) coating for tapping hard-to-machine materials, with minimum quantity lubrication (MQL) or dry machining, longer tool life and higher cutting speeds.
- 3 to 4 flutes, depending on size.
- Form B chamfer, 4.5 x P.
- Thread tolerance 6HX.
- The UNI designation is for normal, general purpose materials, with a normal rake angle and high thread relief, in powder metal high speed steel.
- PM-HSSE V3 offers superior tool life.
- 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 |
|---|---|---|---|---|---|---|---|---|---|
| T688 1200 | M12 x 1.75 | 1.75 | 10.2 | 110 | 17.5 | 9 | 7 | 10 | 3 |
| T688 1400 | M14 x 2 | 2 | 12 | 110 | 20 | 11 | 9 | 12 | 3 |
| T688 1600 | M16 x 2 | 2 | 14 | 110 | 20 | 12 | 9 | 12 | 4 |
| T688 1800 | M18 x 2.5 | 2.5 | 15.5 | 125 | 25 | 14 | 11 | 14 | 4 |
| T688 2000 | M20 x 2.5 | 2.5 | 17.5 | 140 | 25 | 16 | 12 | 15 | 4 |
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | T688 |
| Type | Spiral point (gun) tap |
| Thread series | Metric coarse (M) |
| Material | PM-HSSE V3 |
| Finish | Hardlube |
| Designation | UNI |
| 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: T687 Metric Coarse Spiral Point Tap Black Magic - PM-HSSE V3 - Hardlube - DIN 371, T681 Metric Coarse Spiral Point Tap VA PM - PM-HSSE V3 - TiCN - DIN 376, T680 Metric Coarse Spiral Point Tap VA PM - PM-HSSE V3 - TiCN - DIN 371, T649 Metric Coarse Spiral Point Tap Left Hand - HSSE - Bright - DIN 376, T648 Metric Coarse Spiral Point Tap Left Hand - HSSE - Bright - DIN 371.
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Sutton T688 Metric Coarse Spiral Point Tap Black Magic - PM-HSSE V3 - Hardlube - DIN 376: M12 x 1.75
SKU: A0131520 | Model: T6881200
This is the tap size M12 x 1.75 option of the Sutton T688 Metric Coarse Spiral Point Tap Black Magic - PM-HSSE V3 - Hardlube - DIN 376. Key details for this option: thread length 17.5mm, tapping drill size 10.2mm, overall length 110mm, square length 10mm.
Sutton T688 Spiral Point (Gun) Tap - UNI - Black Magic
The Sutton T688 is a spiral point (gun) tap (UNI designation, Black Magic range) for metric coarse (M) threads, made from powder metallurgy, vanadium grade high speed steel (PM-HSSE V3) with a Hardlube (TiAlN + WC/C) coating. 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 UNI designation is for normal, general purpose materials, with a normal rake angle and high thread relief, in powder metal high speed steel. 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.