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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

The Montolit FAJ08 5/16" Diamond Drill Bit delivers fast, clean drilling in porcelain, ceramic, granite, and natural stone. Built for wet or dry operation, its vacuum-brazed diamond crown cuts aggressively while staying cool and stable—ideal for installers who need reliable holes for plumbing fixtures, anchors, and hardware. These bits have a very long life especially when used with the Montolit M-PERFORMER Cooling Gel

More Details

The FAJ Series is built for high-speed drilling in extremely hard materials. The FAJ08 is a precision-size bit commonly used for small hardware penetrations, accessory brackets, and layout points.

Features & Specifications:

  • Diameter: 5/16" (FAJ08)
  • Designed for wet or dry drilling
  • Vacuum-brazed diamond cutting edge
  • Ideal for porcelain, ceramic, granite, marble, and stone
  • Perfect for anchors, screw points, fasteners, and small penetrations
  • Rigid, balanced steel body reduces vibration
  • Fast, clean drilling with long service life
  • Compatible with standard drills and angle grinders (with adapter)
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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.