NT TOOL CORPORATION
NT Tool Corporation ST Series New Chamfering Drill

Manufacturer: NT TOOL CORPORATION
Model: ST Series
Feature
- For chamfering, deburring, and countersinking.
- For hard and inductile material (iron). Cobalt high-speed steel is used for the cutting tip. Higher durability. Regrinding is possible.
Dimensions

| Model | a Angle | Min pilot hole dia. | Max chamfering dia. | Type | d h7 | D | D1 | ℓ | ℓ 2 | L |
|---|---|---|---|---|---|---|---|---|---|---|
| 07 -ST8 -90° | 90° | 1.5 | 7 | 1 | 8 | — | — | — | — | 55 |
| 15 -ST8 -90° | 90° | 2 | 15 | 2 | 8 | 16 | — | 54 | 47 | 65 |
| 25 -ST10 -90° | 90° | 6 | 25 | 2 | 10 | 26 | 3 | 65 | 58 | 80 |
| 35 -ST12 -90° | 90° | 11 | 35 | 2 | 12 | 36 | 10 | 74 | 67 | 90 |
| 45 -ST12 -90° | 90° | 16 | 45 | 2 | 12 | 46 | 15 | 76 | 68 | 95 |
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