Skip to content
Montolit FAJ05 3/16" Diamond Drill Bit

Montolit FAJ05 3/16" Diamond Drill Bit

by Montolit
SKU FAJ05
$32.25 - $32.25
$32.25
$32.25 - $32.25
$32.25

Clean, fast holes in the hardest tile. The Montolit FAJ05 3/16" Diamond Drill Bit drills a 3/16" 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 3/16" holes in porcelain, stone, and glass.

  • Hole size: 3/16"
  • 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: Pilot holes, small anchors, trim fasteners, and layout reference points
  • Build: Balanced body runs with minimal vibration for accurate starts and straight holes
Shipping & Return Policies

Shipping Policy

Refund & Return Policy

Montolit FAJ05 3/16" Diamond Drill Bit — Precise Small Holes Without the Cracks

Small holes are the ones that bite back. A 3/16" pilot or trim anchor started with a wandering bit skates across the glaze and spider-cracks it before you've even made the hole. The Montolit FAJ05 drills a clean 3/16" hole through dense porcelain, natural stone, and glass with a vacuum-brazed diamond crown that bites hard and leaves crisp edges — so the small stuff stays accurate and chip-free.

It runs wet or dry, on a drill or an angle grinder, and its balanced body starts where you aim it instead of skating. For dry drilling, dip it in M-PERFORMER cooling gel to keep it cool, and refine the finished hole with the Diamond Countersink to relieve stress and prevent cracks down the road.

Why Tile Pros Choose It

  • Clean small holes: Vacuum-brazed 3/16" crown for crisp, chip-free edges
  • Hard materials: Dense porcelain, natural stone, and glass
  • Wet or dry: Runs on a drill or a grinder, whatever your setup
  • Accurate starts: Balanced body resists wandering on slick glaze
  • Best for: Pilot holes, small anchors, trim fasteners, and layout points
  • The difference between "mounted" and "re-tiling that wall": Small hole, big consequences

Pro tip: Start at a low angle to let the crown bite the glaze, then bring the bit vertical once it's seated. Keep it cool with water or gel — heat is what kills a small bit fastest.