135 Degree NAS 907 Type B General Purpose Aircraft Extension Drill Cleveland 3957-12 Bright HSS 1/4-E
| Item | Extra Long Drill Bit |
|---|---|
| Overall Length | 12 in |
| Drill Bit Point Angle | 135 Degrees |
| Drill Bit Size | 1/4 in |
| Number of Flutes | 2 |
| Shank Dia. | 1/4 in |
| Material - Machining | High Speed Steel |
| Cutting Direction | Right Hand |
| Finish - Machining | Bright |
| Shank Type - Machining | Straight |
| Drill Bit Dimension Type | Fractional Inch |
| Flute Length | 2-3/4 in |
| Depth:Dia. Ratio | 4 xD |
| Size | 1/4" |
| Application | For Alloy Steel, Carbon Steel And Cast Iron |
| Standards | NAS 907 Type B |
| Decimal Equivalent | 0.25 |
| Number of Pieces | 1 |
| Drill Bit Grouping | Drill Bit |
| List Number | 3957 |
| Flute Type | Spiral |
| Diameter | 0.25 |
| Shank Size | 0.25 |
| Measurement System | Fractional Inch |
| Shank Length | 9-1/4 in |
| Coolant Fed | Non-Coolant Through |
| Primary Material Application | Brass, Bronze, Copper, Aluminum, Steel |
| Primary Material Application ISO Code | P, N |
| Spiral Direction | Right Hand |
| Helix Angle | 21 Degrees to 34 Degrees |
| Maximum Drilling Depth | 1 in |
| Drill Point Length | 0.0518 in |
| Series | 3957-12 |
| Drill Length Class | Extra Long |
| Drill Diameter Tolerance | +0.0000 in /-0.0007 in |
| Secondary Material Application ISO Code | M, K |
| Aircraft Drill | Yes |
| Drill Bit Point Type | Split Point |
| Material Grade - Machining | High Performance |
| Secondary Material Application | Cast Iron, Stainless Steel |
| Drill Style | Aircraft Extension Drill |
| Package Quantity | 1 |