COBALT DRILLS
3/64" Cobalt Drill Bit. .0625 decimal equivalent,7/8" flute length,1 7/8" overall length. Cobalt drills feature a 135 degree split point for instant penetration without a center punch. These drills are made from a special alloy of M42 steel containing 8% cobalt. The extra thick drill core adds further rigidity and strength.
3/16" Cobalt Drill Bit
•.1875 decimal equivalent
•Flute Length: 2 5/16"
•Overall Length: 3 1/2"
•Cobalt drills feature a 135 degree split point for instant penetration without a center punch.
• These drills are made from a special alloy of M42 steel containing 8% cobalt
•The extra thick drill core adds further rigidity and strength.
1/4" Cobalt Drill Bit
.2500 decimal equivalent 2 3/4" flute length 4" overall length. Cobalt drills feature a 135 degree split point for instant penetration without a center punch. These drills are made from a special alloy of M42 steel containing 8% cobalt. The extra thick drill core adds further rigidity and strength.
Cobalt Drill Bit - 5/16" Jobber Length. Also known as standard length drills, jobber drills are the most popular and widely used lengths that can be used in portable and machine drilling. The 5/16" drill bit is 4-1/2" in length.
These cobalt drill bits have a 135° split point making them ideal for drilling through tough materials by hand. The 135° tip angle and the split point virtually eliminates drill “walking” when beginning a drilled hole.
21/64" Cobalt Drill Bit
•M35 5% cobalt drills are are effective in drilling tough, high tensile strength materials
•135° split point tip for fast penetration and accurate drilling
•For use in hard materials such as inconel, stainless steel and titanium
• Display high red hardness, permitting speeds up to 30% greater than with conventional M2 high speed
• Round shank for use in a wide range of tool holding systems Jobber (standard) length drill bit