Sutton T449 1-1/8 x 8 TPI Straight Flute Tap Intermediate - HSS - Bright - ISO 529
Available
The Sutton T449 is a straight flute tap (intermediate chamfer) for 8UN threads, made from high speed steel (HSS) with a bright finish. This listing covers 8 sizes from 1-1/8 x 8 TPI to 2 x 8 TPI.
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 tap has a intermediate chamfer (Form D, 3.5 to 5 threads on the lead), generally for through holes.
The thread tolerance is GH8/2B. The tap is built to ISO 529: short machine tap construction.
Where this product is used
- General purpose use.
- Suitable for materials up to 1000 N/mm2.
- Through & blind holes.
- Suitable for both hand and machine operations.
- Depths up to approx. 1 x d1.
Design features
- High speed steel (HSS). Standard tool material for most common applications.
- Bright finish for general purpose applications.
- 4 flutes.
- Intermediate chamfer (Form D), generally for through holes.
- Thread tolerance GH8/2B.
- ISO 529 construction, short machine tap 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 | TPI | Tapping drill (mm) | l1 overall (mm) | l2 thread (mm) | d2 shank (mm) | sq square (mm) | l4 square length (mm) | Flutes |
|---|---|---|---|---|---|---|---|---|---|
| T449 2858 | 1-1/8 x 8 TPI | 8 | 25.5 | 138 | 48 | 20 | 16 | 20 | 4 |
| T449 3175 | 1-1/4 x 8 TPI | 8 | 28.5 | 151 | 51 | 22.4 | 18 | 22 | 4 |
| T449 3493 | 1-3/8 x 8 TPI | 8 | 31.75 | 162 | 57 | 25 | 20 | 24 | 4 |
| T449 3810 | 1-1/2 x 8 TPI | 8 | 35 | 170 | 60 | 28 | 22.4 | 26 | 4 |
| T449 4128 | 1-5/8 x 8 TPI | 8 | 38 | 170 | 60 | 28 | 22.4 | 26 | 4 |
| T449 4445 | 1-3/4 x 8 TPI | 8 | 41.5 | 187 | 67 | 31.5 | 25 | 28 | 4 |
| T449 4763 | 1-7/8 x 8 TPI | 8 | 44.5 | 187 | 67 | 31.5 | 25 | 28 | 4 |
| T449 5080 | 2 x 8 TPI | 8 | 47.5 | 200 | 70 | 35.5 | 28 | 31 | 4 |
Key specifications
| Specification | Detail |
|---|---|
| Catalogue code | T449 |
| Type | Straight flute tap |
| Thread series | 8UN |
| Material | HSS |
| Finish | Bright |
| Chamfer | Intermediate (Form D) |
| Thread tolerance | GH8/2B |
| Standard | ISO 529 |
| Flutes | 4 |
| Sizes in this listing | 8 sizes, 1-1/8 x 8 TPI to 2 x 8 TPI |
Related products
Related Sutton taps: T448 8UN Straight Flute Tap Taper - HSS - Bright - ISO 529, T450 8UN Straight Flute Tap Bottoming - HSS - Bright - ISO 529.
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Sutton T449 8UN Straight Flute Tap Intermediate - HSS - Bright - ISO 529: 1 1/8
SKU: A0015471 | Model: T4492858
Diameter (inch) 1 1/8. Features
The Sutton T449 is a straight flute tap (intermediate chamfer) for 8UN threads, made from high speed steel (HSS) with a bright finish. This listing covers 8 sizes from 1-1/8 x 8 TPI to 2 x 8 TPI.
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 tap has a intermediate chamfer (Form D, 3.5 to 5 threads on the lead), generally for through holes.
The thread tolerance is GH8/2B. The tap is built to ISO 529: short machine tap construction.