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Ten cobalt drill bits in a plastic storage case

Olympia Tools 3/16 inch Cobalt Drill Bits M35 HSS 135 Degree Tip Jobber Length Twist Drill Bit Set Pack of 10

SKU CH-JG9D-WVREP

Ten 3/16-inch M35 cobalt bits with 135-degree tips drill hard metal, stainless steel, cast iron, wood and plastic, supplied in a storage case

  • TypeBand Saw Blades
  • MaterialPlastic
  • Compatibility/FitmentOut-Opening, Narrow Stile, Store Front Doors
  • Selling UnitSet
  • Color/FinishChrome
  • FeaturesWidely Use
  • M35 cobalt steel with 5% cobalt resists wear and heat
  • 135-degree split point centres quickly and reduces thrust
  • Jobber length flute at 58.74 mm clears chips fast
  • 10-piece set covers 3/16 inch drilling in metal, wood and plastic
  • Sturdy plastic case keeps bits organised and protected

3/16 inch Cobalt Drill Bit Set

This set contains ten identical 3/16 inch jobber-length twist drill bits made from M35 high-speed steel with 5% cobalt. The bits are designed for drilling hard metals such as stainless steel and cast iron, as well as wood and plastic. They come organised in a sturdy plastic storage case.

135 Degree Tip and Straight Shank

The 135 degree split-point tip provides precise positioning and fast penetration with lower pressure. A straight shank prevents walking during initial contact and fits standard drill chucks. The twist flute geometry clears particles quickly to reduce friction and heat build-up during use.

M35 Cobalt Alloy for Hard Materials

The uniform hardness of the M35 cobalt alloy allows the cutting edges to be resharpened repeatedly without damage. The bits comfortably handle stainless steel, cast iron, galvanised pipe, high-temperature alloys and titanium alloys. They are not suited for applications requiring diameters other than 3/16 inch or for very deep holes beyond the jobber flute length.

Highlights

  • M35 cobalt steel with 5% cobalt resists wear and heat
  • 135-degree split point centres quickly and reduces thrust
  • Jobber length flute at 58.74 mm clears chips fast
  • 10-piece set covers 3/16 inch drilling in metal, wood and plastic
  • Sturdy plastic case keeps bits organised and protected

Specifications

BrandOlympia Tools
ModelHand Rivet Nut Setter Kit
TypeBand Saw Blades
MaterialPlastic
Compatibility/FitmentOut-Opening, Narrow Stile, Store Front Doors
Selling UnitSet
Color/FinishChrome
FeaturesWidely Use
Item Count2 pack
Part NumberGMTOOLS

Questions about this item

How long can the 135-degree tip maintain its edge before sharpening is needed?

The M35 cobalt steel has uniform hardness, so the cutting edge can be repeatedly sharpened without damage, extending usable life under heavy drilling.

How hot do the bits get during continuous drilling in stainless steel?

The 135-degree split-point design clears particles quickly, reducing friction and heat build-up even during extended use in hard metals.

What size drill chuck is required for the straight shank on these bits?

The 3/16-inch (4.76 mm) straight shank fits any standard drill chuck that accepts that diameter, no special adaptor needed.

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