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Metal Drill Bits
5/32 In. x 3-1/8 In. Cobalt Drill Bit
5/32 In. x 3-1/8 In. Cobalt Drill Bit
9/64 In. x 2-7/8 In. Cobalt Drill Bit
5/32 In. x 3-1/8 In. Cobalt Drill Bit
5/32 In. x 3-1/8 In. Cobalt Drill Bit
9/64 In. x 2-7/8 In. Cobalt Drill Bit

Cobalt Drill Bits

For rotary drills/drivers

Long Lifetime

  • Cobalt Twist Drill Bit provides long-lasting performance when drilling stainless steel
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
  • Available in jobber length, full shank
  • Best used for drilling into light-gauge metal, high-carbon steel, aluminum and ally steel, cast iron, stainless steel and titanium
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Materials

Stainless steel
Metal pipes and profiles
Steel sheets

Select options

Diameter (D) Inch

Total length (L2) Inch

Choose a pack size

Select options

Diameter (D) Inch 30 options

Total length (L2) Inch 30 options

Choose a pack size 3 options

Available product options (53)
Cobalt Drill Bits
from 
For rotary drills/drivers

Fits tools of most brands

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imageAlt
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Cylindrical shank compatible with three-jaw drill chucks.

LONG LIFETIME WHEN DRILLING STAINLESS STEEL

The Cobalt Drill Bit provides long-lasting performance when drilling stainless steel. This extended lifetime results from a cobalt alloy content of 5% and fully ground HSS (high-speed steel), which provides excellent surface quality, wear resistance and heat protection. Equipped with two cutters and two flutes, chips are removed quickly to make the bit last even longer. This drill bit works with alloyed and non-alloyed steel, stainless steel, cast iron, cast steel and acid- and heat-resistant steels.

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Product Options

Available product options: 53

Part number Diameter (D) Inch Working length (L1) Inch Total length (L2) Inch Pack quantity
CO2131 1/16 15/16 1 7/8 1
CO2132 5/64 - 2 1
CO2133 3/32 1 1/4 2 1/4 1
CO2134 7/64 1 1/2 2 5/8 1
CO2135 1/8 1 5/8 2 3/4 1
CO2136 9/64 1 3/4 2 7/8 1
CO2137 5/32 2 3 1/8 1
CO2138 11/64 2 1/8 3 1/4 1
CO2140 13/64 2 7/16 3 5/8 1
CO2142 15/64 2 5/8 3 7/8 1
CO2144 17/64 2 7/8 4 1/8 1
CO2145 9/32 3 4 1/4 1
CO2146 19/64 3 4 3/8 1
CO2147 5/16 3 3/16 4 1/2 1
CO2148 21/64 3 5/16 4 5/8 1
CO2149 11/32 3 4 3/4 1
CO2150 23/64 3 1/2 4 7/8 1
CO2151 3/8 3 5/8 5 1
CO2152 25/64 3 11/32 5 1/8 1
CO2153 13/32 3 11/32 5 1/4 1
CO2154 27/64 15/32 5 3/8 1
CO2155 7/16 3 1/2 5 1/2 1
CO2157 15/32 3 3/4 5 3/4 1
CO2158 31/64 3 7/8 5 7/8 1
CO2159 1/2 4 6 1
CO4128 1/64 3/16 3/4 12
CO4130 3/64 3/4 1 3/4 12
CO4131 1/16 7/8 1 7/8 12
CO4132 5/64 1 2 12
CO4133 3/32 1 1/4 2 1/4 12
CO4134 7/64 1 1/2 2 5/8 12
CO4135 1/8 1 5/8 2 3/4 12
CO4136 9/64 1 3/4 2 7/8 12
CO4137 5/32 2 3 1/8 12
CO4138 11/64 2 1/8 3 1/4 12
CO4140 13/64 2 1/2 3 5/8 12
CO4141 7/32 2 3 3/4 12
CO4142 15/64 2 3/4 3 7/8 12
CO4143 1/4 2 3/4 4 12
CO4144 17/64 2 7/8 4 1/8 6
CO4145 9/32 2 61/64 4 1/4 6
CO4146 19/64 3 4 3/8 6
CO4147 5/16 3 3/16 4 1/2 6
CO4148 21/64 3 5/16 4 5/8 6
CO4149 11/32 3 15/32 4 3/4 6
CO4150 23/64 3 1/2 4 7/8 6
CO4152 25/64 3 1/4 5 1/8 6
CO4154 27/64 3 15/32 5 3/8 6
CO4155 7/16 3 1/2 5 1/2 6
CO4156 29/64 3 1/2 5 5/8 6
CO4157 15/32 3 3/4 5 3/4 6
CO4158 31/64 3 7/8 5 7/8 6
CO4159 1/2 4 6 6

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