Chicago-Latrobe #21 Cobalt Steel Short Length Drill Bit
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- Short length drill bit offers rigidity to reduce tool deflection and breakage
- Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials
- Gold oxide finish lubricates and provides wear resistance on ferrous materials
- 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging
- Extra-thick web provides increased strength and rigidity compared to standard drill bits
- The Chicago-Latrobe 559 series short length drill bit is made from cobalt steel with a gold oxide finish and has a 135-degree split point for penetrating without a pilot hole on ferrous materials. The short length provides rigidity and strength to reduce tool deflection and breakage. Cobalt steel provides extended tool life compared to high-speed steel drill bits, and maintains the tool's toughness and hardness in high drilling temperatures. The gold oxide finish acts as a lubricant and provides wear resistance. The self-centering 135-degree split point penetrates hard material without a pilot hole and produces smaller chips that reduce clogging compared to a 118-degree point. Compared to a standard drill bit, this bit has a thicker web for increased strength and rigidity. The round shank accommodates most drill chucks.
- Decimal Equivalent: 0.1590
- Drill Point (Deg.): 135
- Finish: Straw
- Flute Length (In.): 1-1/16
- Grade: Heavy Duty
- Item: Screw Machine Drill
- Material: Cobalt
- Overall Length (In.): 2-1/8
- Point Type: Split Point
- Shank Dia. Type: Standard
- Wire Size: #21
- Drill Bit
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