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#31 HSS Black Oxide Jobber Length Drill Bit - 12 Pack

#31 HSS Black Oxide Jobber Length Drill Bit - 12 Pack - Main image
$6.24 $8.91 In stock
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Product Specification

#31 HSS BLACK OXIDE JOBBER LENGTH DRILL BITS - 12 PACK

#31 HSS Black Oxide Jobber Length Drill Bits - 12 Pack is a drill bit that has a long length compared to its diameter. These bits provide more flexibility and absorb more shock and vibration than cobalt, powdered-metal, and carbide jobber-length. These jobber bits have a good balance of strength and precision when drilling into a range of materials. Each jobber bit is commonly used in softer materials such as wood, soft metals, or composite. They come in a wide range of sizes, finishes, and materials. Our jobber bits are designed, engineered, and superbly crafted to provide long-lasting durability.

A 135 degree split point designed to prevent wobbling, walking or skating and eliminate the need for a pilot punch. These bits are manufactured from M2 high speed steel and heat treated to ensure an extended life and optimal performance cutting holes. The black oxide finish provides increased abrasion and corrosion resistance. 

Quantity: 12 pieces

Dimensions

  • Overall Length – 2-3/4” (Jobber Length)
  • Sizes – #31 wire gauge
  • Decimal Equivalent – 0.12”
  • Shank Diameter – round straight chank

Machines Used On:

  • Electric powered rotary drills and chuck adapters

Material Used On:

Steel, sheet metal, PVC, MDF, oak, maple, aluminum and more

Safety Tips/techniques:

  • Always wear proper PPE to include (but not limited to) safety glasses, hearing protection, respirator, and hand protection.  Keep all guards in place on your machine.
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      Customer Reviews (4.8 / 5 · 5 reviews)

      Evelyn Q. ★★★★★

      Had to grab these because my old bits kept wandering on steel; the black oxide finish really seems to grip better. Drilled through a dozen holes in a bracket without any chatter. These #31s are staying sharp so far.

      Ryan Q. ★★★★★

      Bought the 12-pack so I'd stop hunting for a single bit every time one snapped. The black oxide coating seems to help them hold up better than the shiny cheap ones I've used, and the jobber length gives me enough reach on deeper holes. Twelve of the same size means I'm set for a while.

      John D. ★★★★★

      Grabbed these for a weekend project drilling through some mild steel and they held up better than the price suggested. Jobber length gives plenty of reach in tight spots, and having 12 means I'm not stopping to resharpen mid-job.