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Montolit FAJ08 5/16" Diamond Drill Bit

Montolit FAJ08 5/16" Diamond Drill Bit

by Montolit
SKU FAJ08
$35.89 - $35.89
$35.89
$35.89 - $35.89
$35.89

Clean, fast holes in the hardest tile. The Montolit FAJ08 5/16" Diamond Drill Bit drills a 5/16" hole through dense porcelain, natural stone, and glass with a vacuum-brazed diamond crown that bites hard and leaves crisp edges — far less chipping and cracking than cheap bits. Run it wet or dry, on a drill or a grinder.

More Details

A vacuum-brazed diamond drill bit for clean 5/16" holes in porcelain, stone, and glass.

  • Hole size: 5/16"
  • Diamond crown: Vacuum-brazed for aggressive cutting and clean hole edges
  • Materials: Dense porcelain, natural stone, glass, and other hard tile
  • Wet or dry: Works either way — adapts to any jobsite setup
  • Best for: Small-diameter anchors and detail holes in dense porcelain and polished stone
  • Build: Balanced body runs with minimal vibration for accurate starts and straight holes
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Montolit FAJ08 5/16" Diamond Drill Bit - Montolit Quality. Crafted for Daily Use

The Montolit FAJ08 Diamond Drill Bit is designed for installers who need accuracy on the smallest details. When drilling in dense porcelain or polished stone, even a 5/16" hole demands stability and cutting precision—exactly what the FAJ08 delivers. The vacuum-brazed diamond crown bites aggressively into tough materials while producing smooth, clean hole edges that reduce the risk of cracks or breakout.

Because the FAJ08 works wet or dry, it adapts instantly to any jobsite scenario. Its balanced body minimizes vibration, helping maintain control when drilling on wall tile, backsplashes, shower walls, or delicate natural stone. This size is ideal for mounting brackets, attaching accessories, installing clips or fasteners, or creating precise layout reference points.

Durable, fast, and exceptionally clean-cutting, the FAJ08 is a must-have bit for installers who value accuracy on finished surfaces.

Why Tile Pros Choose It

  • Precision at small diameters: Perfect for detailed hardware and anchor installation.

  • Vacuum-brazed diamonds: Cuts dense porcelain quickly and cleanly.

  • Reduced chipping: Produces smoother hole edges on brittle materials.

  • Wet or dry versatility: Performs reliably in any work environment.

  • Balanced control: Low vibration improves accuracy on vertical surfaces.

  • Built for daily use: Durable construction extends the bit’s lifespan across many installs.