Sutton T291 M6 x 1 Straight Flute Tap GG - HSSE - Plasma Nitride + Steam Oxide - DIN 376
Available
The Sutton T291 is a straight flute tap (GG designation) for metric coarse (M) threads, made from premium grade high speed steel (HSSE) with a plasma nitride (Ni) and blue steam-oxide finish. This listing covers 7 sizes from M6 x 1 to M20 x 2.5.
Straight flutes suit through or blind holes, but they hold only a small amount of chips and do not transport them axially, so deep holes are best avoided except in short chipping materials. The GG designation is for cast iron, with straight flutes and a low rake angle. The chamfer is Form C (2.5 x P), generally for blind holes.
The thread tolerance is 6HX. The tap is built to DIN 376: reduced shank with square drive.
Where this product is used
- For use in grey cast iron (GG).
- Through & 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.
- Plasma nitride (Ni) and blue steam-oxide finish to increase surface hardness and carry lubricant better.
- 4 flutes.
- Form C chamfer, 2.5 x P.
- Thread tolerance 6HX.
- The GG designation is for cast iron, with straight flutes and a low rake angle.
- 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 |
|---|---|---|---|---|---|---|---|---|---|
| T291 0600 | M6 x 1 | 1 | 5 | 80 | 19 | 4.5 | 3.4 | 6 | 4 |
| T291 0800 | M8 x 1.25 | 1.25 | 6.8 | 90 | 22 | 6 | 4.9 | 8 | 4 |
| T291 1000 | M10 x 1.5 | 1.5 | 8.5 | 100 | 24 | 7 | 5.5 | 8 | 4 |
| T291 1200 | M12 x 1.75 | 1.75 | 10.2 | 110 | 28 | 9 | 7 | 10 | 4 |
| T291 1400 | M14 x 2 | 2 | 12 | 110 | 30 | 11 | 9 | 12 | 4 |
| T291 1600 | M16 x 2 | 2 | 14 | 110 | 32 | 12 | 9 | 12 | 4 |
| T291 2000 | M20 x 2.5 | 2.5 | 17.5 | 140 | 34 | 16 | 12 | 15 | 4 |
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | T291 |
| Type | Straight flute tap |
| Thread series | Metric coarse (M) |
| Material | HSSE |
| Finish | Plasma Nitride + Steam Oxide |
| Designation | GG |
| Chamfer | Form C / 2.5 x P |
| Thread tolerance | 6HX |
| Standard | DIN 376 |
| Flutes | 4 |
| Sizes in this listing | 7 sizes, M6 x 1 to M20 x 2.5 |
Related products
Related Sutton taps: T290 Metric Coarse Straight Flute Tap GG - HSSE - Plasma Nitride + Steam Oxide - DIN 371, T292 Metric Coarse Straight Flute Tap GG - HSSE - TiCN - DIN 371, T293 Metric Coarse Straight Flute Tap GG - HSSE - TiCN - DIN 376, T294 Metric Coarse Straight Flute Tap XH - SPM - TiCN, T287 Metric Coarse Straight Flute Tap - HSSE - Bright - DIN 376.
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Sutton T291 Metric Coarse Straight Flute Tap GG - HSSE - Plasma Nitride + Steam Oxide - DIN 376: M6
SKU: A0014238 | Model: T2910600
Diameter (metric) M6. Features
The Sutton T291 is a straight flute tap (GG designation) for metric coarse (M) threads, made from premium grade high speed steel (HSSE) with a plasma nitride (Ni) and blue steam-oxide finish. This listing covers 7 sizes from M6 x 1 to M20 x 2.5.
Straight flutes suit through or blind holes, but they hold only a small amount of chips and do not transport them axially, so deep holes are best avoided except in short chipping materials. The GG designation is for cast iron, with straight flutes and a low rake angle. The chamfer is Form C (2.5 x P), generally for blind holes.
The thread tolerance is 6HX. The tap is built to DIN 376: reduced shank with square drive.