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 | Long drill |
| Point | Special notched point, reduces end thrust |
| Material | High speed, spring-tempered shank |
| Use for | Reaching through small openings or past projections |
| Do not use for | — |
A dash means the sources do not state it.
Sizes
| Size | For | Inches (official) | mm (converted, not official) |
|---|---|---|---|
| Shortest length | Overall length | 6 in | 152.400 |
| Longest length | Overall length | 12 in | 304.800 |
| Guard needed under | Diameter | 0.25 in | 6.350 |
Exact mm = inches × 25.4.
Notes
- Use the shortest that does the job and check it is straight. Under 1/4 in, support it with a guard so it does not whip.
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
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.