Irwin® Screw Machine Drill, Series: 301, Imperial, 7/16 in Drill - Fraction, 0.4375 in Drill - Decimal Inch, 3-7/16 in Overall Length, 2-1/16 in Cutting Depth, 2 Flutes, Spiral Flute, 2-1/16 in Flute Length, Straight Shank, 135 deg Point, Split/Self-Centering Point, Right Hand Cutting Direction, HSS Cutting Edge, HSS, Black Oxide, Applicable Materials: Aluminum, Brass, Copper, Wood/Drywall, Sheet Metal, Mild Steel, High Alloy Steel, Stainless Steel, Cast Iron and Plastic
| Applicable Materials | : | Aluminum, Brass, Copper, Wood/Drywall, Sheet Metal, Mild Steel, High Alloy Steel, Stainless Steel, Cast Iron and Plastic |
| Cutting Depth | : | 2-1/16 in |
| Cutting Direction | : | Right Hand |
| Cutting Edge Material | : | HSS |
| Drill Diameter Measurement System | : | Imperial |
| Drill Size - Decimal Inch | : | 0.4375 in |
| Drill Size - Fraction | : | 7/16 in |
| Finish | : | Black Oxide |
| Flute Length | : | 2-1/16 in |
| Flute Type | : | Spiral |
| Material | : | HSS |
| Number of Flutes | : | 2 |
| Overall Length | : | 3-7/16 in |
| Point Angle | : | 135 deg |
| Point Type | : | Split/Self-Centering |
| Series | : | 301 |
| Shank Type | : | Straight |
- Shorter length provides increased strength and rigidity
- Self-centering 135 deg split point starts immediately on flat or curved surfaces
- Engineered with premium high speed steel with black oxide coating for corrosion resistance
- Shorter length for increased strength and rigidity