Inch values are official. Aviation is designed and worked in inches. Millimetres are converted and are not official; where one is shown, the metric drill is the nearest alternative, not the official drill.
Specification
Where to buy| Item | Value |
|---|---|
| Type | Twist drill |
| Point | — |
| Material | Solid carbide |
| Use for | Carbon and glass fibre; titanium |
| Do not use for | — |
A dash means the sources do not state it.
Sizes
| Size | For | Inches (official) | mm (converted, not official) |
|---|---|---|---|
| Largest single step, titanium | Titanium, by hand | 0.1563 in | 3.970 |
Exact mm = inches × 25.4.
Notes
- Chipped edges are the usual failure.
Where to buy
AmericaDistributor coming soonOur partner for this region is on its way
EuropeDistributor coming soonOur partner for this region is on its way
OceaniaDistributor coming soonOur partner for this region is on its way
Distributors coming soon.
Sources
- FAA-H-8083-31, AMT Handbook, Airframe, Volume 1 (rev. A) — pp. 4-86, 7-49, 7-51
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.