Bosch drill bit.
5/16 In. X 4-1/2 In. Cobalt M42 Drill Bit_CO2147B_PKG
Bosch drill bit.
5/16 In. X 4-1/2 In. Cobalt M42 Drill Bit_CO2147B_PKG
Bosch Professional drill with "CORE18V" battery, used by a person in safety gear to drill into a metal beam.
Drill bit drilling a hole in a metal plate held in place by a clamp, on a wooden surface; another drill bit lies nearby.
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
A drill bit drilling into a metal plate, producing metal shavings.
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
Bosch drill bit.
5/16 In. X 4-1/2 In. Cobalt M42 Drill Bit_CO2147B_PKG
Bosch drill bit.
5/16 In. X 4-1/2 In. Cobalt M42 Drill Bit_CO2147B_PKG
Bosch Professional drill with "CORE18V" battery, used by a person in safety gear to drill into a metal beam.
Drill bit drilling a hole in a metal plate held in place by a clamp, on a wooden surface; another drill bit lies nearby.
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
A drill bit drilling into a metal plate, producing metal shavings.
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
For rotary drills/drivers

Fits tools of most brands

Cobalt M42 Drill Bits
Cobalt M42 Drill Bits
Cobalt M42 Drill Bits

Cylindrical shank compatible with three-jaw drill chucks.

LONG LIFETIME WHEN DRILLING STAINLESS STEEL

Product Options

Available product options: 15

Expand Model number Diameter (D) Inch Working length (L1) Inch Total length (L2) Inch Pack quantity Availability
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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