Milwaukee® Thunderbolt® aircraft length drill bit, 5/16 in, 0.3125 in drill, 12 in OAL, 3-3/16 in cutting depth, parabolic flute, 3-3/16 in flute length, 1/4 in shank, 3-flat shank, 135° point, split point, HSS cutting edge, HSS, black oxide, applicable materials: metal, plastic and wood.
Features
- Thunderbolt® web provides longer life and faster driller times
- Fast, accurate drilling - 135° split point tip starts on contact to prevent walking
- Reduced slipping - 3-flat Secure-Grip™ shank holds the bit firmly in the drill chuck
- Versatile - extended length for hard to reach areas, with reduced shank dia for use in 3/8 in chucks
- Corrosion-resistant - black oxide coating provides lubricity and resists corrosion of the bit
