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  • Taper-Shank Drill Bits

    Taper Shank Drill Bit, Drill Bit Size 1/2", Drill Bit Point Angle 118°, Conventional Point

  • Item # 439G12
  • Mfr. Model # C12183
Taper Shank Drill Bit,  Drill Bit Size 1/2",  Drill Bit Point Angle 118°,  Conventional Point
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Product Details

These drill bits have a black-oxide finish that retains lubricants to improve the bits' wear resistance and chip flow. Black-oxide bits should only be used for drilling ferrous metals. High-speed steel drill bits provide more flexibility and absorb more shock and vibration than cobalt and carbide drill bits, making them suitable for use in manual drilling machines and handheld power tools. They may leave a rough finish on the hole. These bits have spiral flutes that evacuate chips as the bits drill into a workpiece.

Taper-shank drill bits are directly inserted into the spindle, driving sleeve, or socket of a machine such as a drill press or lathe. This saves time when installing and changing out bits on the machine compared to other styles of drill bits. Taper-shank drill bits are self-locking, which means the friction between the bits and the tool holder keeps the bits in place, even in high-torque applications. These bits should not be used in a collet or chuck.
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Technical Specifications

Item # 439G12
Mfr. Model # C12183
UNSPSC #27112801
Shipping Weight 0.487 lbs
Country of Origin USA *
Item Taper Shank Drill Bit
Drill Bit Size 1/2"
Decimal Equivalent 0.5000
Measurement System Fractional Inch
Material - Machining High Speed Steel
Finish - Machining Black Oxide
Drill Bit Point Angle 118 Degrees
Drill Bit Point Type Conventional Point
Flute Type Spiral
Number of Flutes 2
Flute Length 4-3/8"
Maximum Drilling Depth 4-3/8"
Helix Angle 21 Degrees to 34 Degrees
Cutting Direction Right Hand
Spiral Direction Right Hand
Shank Type - Machining Taper
Taper Shank Size MT2
Overall Length 8-1/4"
Depth:Dia. Ratio 4xD
Coolant Fed Non-Coolant Through
Drill Bit Grouping Individual
Series 2410
Standards ASME B94.11M-1993
Drill Diameter Tolerance +0.0000"/-0.0010"
Material Grade - Machining General Purpose
Primary Material Application Cast Iron, Steel
Primary Material Application ISO Code K, P
Secondary Material Application Cast Iron
Secondary Material Application ISO Code K
* This product's country of origin is subject to change

Compliance and Restrictions