MAKITA D-60078 HSS-G Black Oxide Metal Drill Bit 5/16x4-1/2 Inch

MAKITA D-60078 HSS-G Black Oxide Metal Drill Bit Size 5/16 x 4-1/2 in.
Specifications
Drill bit model D-60078 is a standard size in Makita's Imperial HSS-G Black Oxide range, designed for high performance and durability in metal drilling. HSS-G (Fully Ground): Manufactured from high-quality High-Speed Steel (HSS) and fully ground along its length, resulting in sharp cutting edges and uniform geometry for high drilling stability and reduced vibration. Black Oxide Coating: Black oxide treatment primarily resists rust and corrosion, while also reducing friction and heat buildup during metal drilling to prolong the drill bit's service life. 135° Split Point: The 135-degree split point is a standard feature that enables self-centering to immediately bite into the workpiece without slipping, allowing fast and precise 5/16-inch (7.94 mm) hole drilling without a center punch.                                                                                                                                  Application
MAKITA D-60078 drill bit is suitable for use with electric drills or bench drills for drilling the following materials:
- Metals:
- Alloyed and Non-alloyed Steel
- Cast Iron
- Non-Ferrous Metals such as aluminum, copper, brass
- Medium to thick sheet metal
- General craft/trade work: maintenance, installation, assembly work requiring 5/16 inch drilled holes
- Other materials: can be used to drill thick plastics and wood effectively