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Metal Drill Bits
5/16 In. X 4-1/2 In. Cobalt M42 Drill Bit_CO2147B_Hero
5/16 In. X 4-1/2 In. Cobalt M42 Drill Bit_CO2147B_PKG
5/16 In. X 4-1/2 In. Cobalt M42 Drill Bit_CO2147B_Hero
5/16 In. X 4-1/2 In. Cobalt M42 Drill Bit_CO2147B_PKG
Cobalt M42 Drill Bit_CO14B_CO21B_CO2131B_CO2132B_CO2133B_CO2134B_CO2135B_CO2136B_CO2137B_CO2138B_CO2139B_CO2143B_CO2147B_CO2151B_CO2155B_CO2159B_CO2141B_I Beam App
Cobalt M42 Drill Bit_CO14B_CO21B_CO2131B_CO2132B_CO2133B_CO2134B_CO2135B_CO2136B_CO2137B_CO2138B_CO2139B_CO2143B_CO2147B_CO2151B_CO2155B_CO2159B_CO2141B_Sheet Metal App
Cobalt M42 Drill Bit_CO14B_CO21B_CO2131B_CO2132B_CO2133B_CO2134B_CO2135B_CO2136B_CO2137B_CO2138B_CO2139B_CO2143B_CO2147B_CO2151B_CO2155B_CO2159B_CO2141B_Bit in Tool
Cobalt M42 Drill Bit, CO14B, CO21B, CO2131B, CO2132B, CO2133B, CO2134B, CO2135B, CO2136B, CO2137B, CO2138B, CO2139B, CO2143B, CO2147B, CO2151B, CO2155B, CO2159B, CO2141B, Titanium App 2
Cobalt M42 Drill Bit, CO14B, CO21B, CO2131B, CO2132B, CO2133B, CO2134B, CO2135B, CO2136B, CO2137B, CO2138B, CO2139B, CO2143B, CO2147B, CO2151B, CO2155B, CO2159B, CO2141B, Titanium App 1
Cobalt M42 Drill Bit, CO14B, CO21B, CO2131B, CO2132B, CO2133B, CO2134B, CO2135B, CO2136B, CO2137B, CO2138B, CO2139B, CO2143B, CO2147B, CO2151B, CO2155B, CO2159B, CO2141B, Stainless Steel App
Cobalt M42 Drill Bit, CO14B, CO21B, CO2131B, CO2132B, CO2133B, CO2134B, CO2135B, CO2136B, CO2137B, CO2138B, CO2139B, CO2143B, CO2147B, CO2151B, CO2155B, CO2159B, CO2141B, Carbon Steel App
5/16 In. X 4-1/2 In. Cobalt M42 Drill Bit_CO2147B_Hero
5/16 In. X 4-1/2 In. Cobalt M42 Drill Bit_CO2147B_PKG
5/16 In. X 4-1/2 In. Cobalt M42 Drill Bit_CO2147B_Hero
5/16 In. X 4-1/2 In. Cobalt M42 Drill Bit_CO2147B_PKG
Cobalt M42 Drill Bit_CO14B_CO21B_CO2131B_CO2132B_CO2133B_CO2134B_CO2135B_CO2136B_CO2137B_CO2138B_CO2139B_CO2143B_CO2147B_CO2151B_CO2155B_CO2159B_CO2141B_I Beam App
Cobalt M42 Drill Bit_CO14B_CO21B_CO2131B_CO2132B_CO2133B_CO2134B_CO2135B_CO2136B_CO2137B_CO2138B_CO2139B_CO2143B_CO2147B_CO2151B_CO2155B_CO2159B_CO2141B_Sheet Metal App
Cobalt M42 Drill Bit_CO14B_CO21B_CO2131B_CO2132B_CO2133B_CO2134B_CO2135B_CO2136B_CO2137B_CO2138B_CO2139B_CO2143B_CO2147B_CO2151B_CO2155B_CO2159B_CO2141B_Bit in Tool
Cobalt M42 Drill Bit, CO14B, CO21B, CO2131B, CO2132B, CO2133B, CO2134B, CO2135B, CO2136B, CO2137B, CO2138B, CO2139B, CO2143B, CO2147B, CO2151B, CO2155B, CO2159B, CO2141B, Titanium App 2
Cobalt M42 Drill Bit, CO14B, CO21B, CO2131B, CO2132B, CO2133B, CO2134B, CO2135B, CO2136B, CO2137B, CO2138B, CO2139B, CO2143B, CO2147B, CO2151B, CO2155B, CO2159B, CO2141B, Titanium App 1
Cobalt M42 Drill Bit, CO14B, CO21B, CO2131B, CO2132B, CO2133B, CO2134B, CO2135B, CO2136B, CO2137B, CO2138B, CO2139B, CO2143B, CO2147B, CO2151B, CO2155B, CO2159B, CO2141B, Stainless Steel App
Cobalt M42 Drill Bit, CO14B, CO21B, CO2131B, CO2132B, CO2133B, CO2134B, CO2135B, CO2136B, CO2137B, CO2138B, CO2139B, CO2143B, CO2147B, CO2151B, CO2155B, CO2159B, CO2141B, Carbon Steel App

Cobalt M42 Drill Bits

For rotary drills/drivers

Long Lifetime

  • Cobalt M42 drill bit – provides upgraded M42 cobalt jobber-length bits designed for durability, high heat resistance and hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum
  • Enhanced M42 alloy material – contains 8% cobalt alloy that delivers 10X life vs. standard bits
  • High-heat resistant bits – withstand high-temperature applications for extended periods of time
  • Thick web-helix design – provides additional stability in tough applications

Materials

Stainless steel
Metal pipes and profiles
Steel sheets

Select options

Diameter (D) Inch

Working length (L1) Inch

Choose a pack size

Select options

Diameter (D) Inch 15 options

Working length (L1) Inch 15 options

Choose a pack size 1

Available product options (15)
Cobalt M42 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: 15

Model number Diameter (D) Inch Working length (L1) Inch Total length (L2) Inch Pack quantity
CO2131B 1/16 7/8 1 7/8 1
CO2132B 5/64 1 2 1
CO2133B 3/32 1 1/4 2 1/4 1
CO2134B 7/64 1 1/2 2 5/8 1
CO2135B 1/8 1 5/8 2 3/4 1
CO2136B 9/64 1 3/4 2 7/8 1
CO2137B 5/32 2 3 1/8 1
CO2138B 11/64 2 1/8 - 1
CO2139B 3/16 2 3/8 3 1/2 1
CO2141B 7/32 2 1/2 3 3/4 1
CO2143B 1/4 2 3/4 4 1
CO2147B 5/16 3 3/16 4 1/2 1
CO2151B 3/8 3 5/8 5 1
CO2155B 7/16 3 1/2 5 1/2 1
CO2159B 1/2 4 6 1

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