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Cylindrical silver drill bit with pointed carbide tip, 3-1/2 inches long

ARTU USA INC

ARTU USA INC 3/16 In. x 3-1/2 In. Cobalt Tungsten Carbide Glass Tile Drill Bit

SKU CH-7NYN-G93XH

Cobalt tungsten carbide tip drills clean holes in porcelain tile up to hardness 8 at 400-600 rpm without walking or centre-punching

  • Product typeDrill Bits
  • Drills porcelain up to hardness 8 without chipping
  • Unique 4-face point grind extends bit life
  • Ground double flute clears dust fast, stops clogging
  • Centers instantly with near-zero pressure, no tape needed
  • Operate motor at 400-600 rpm for best results

3/16 Inch Cobalt Tungsten Carbide Drill Bit

This drill bit is designed for glass and tile work, including porcelain up to scratch hardness 8. The cobalt and tungsten carbide tip provides durability for hard brittle materials. It suits professional installers and DIY users who need clean holes in tile without a separate pilot step.

Low-pressure drilling with built-in pilot

Unique point grinding lets the bit start without walking, so tape or centre punching is not required. The ground double flute clears dust efficiently and prevents clogging during use. A 5/32 inch pilot bit is included to guide the cut from the start.

Check drill speed and shank fit before ordering

The motor must run at 400 to 600 rpm; higher speeds will damage the tip. Your chuck must accept a 3/16 inch shank. The bit is not intended for metal, masonry or wood, so verify the material matches the rated hardness range.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 77% of the 5,493 comparable items (median $27.99).

Specifications

Product
Product typeDrill Bits

Questions about this item

How do I confirm the bit is running at the correct speed after setup?

Operate the drill motor between 400 and 600 rpm; the unique 4-face point grinding and double flute design will then produce clean holes with minimal chipping and efficient dust removal.

What comes in the package and what must I supply?

The pack includes the 3/16 in. cobalt and tungsten carbide drill bit and a 5/32 in. pilot bit; you provide a drill capable of 400-600 rpm.

Which capacity should I choose for porcelain tiles rated up to scratch hardness 8?

The 3/16 in. diameter by 3-1/2 in. length bit with cobalt and tungsten carbide tip is specified for porcelain tiles up to scratch hardness 8.

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