CMT Forstner Bit - 15mm Diameter, 8mm Shank, Right-Hand by CMT is engineered for drilling clean, precise flat-bottom holes in softwood with consistent, repeatable results. Whether you are fitting cabinet hinges, installing shelf pins, or routing niches for brackets and hardware straps, this 15mm boring bit delivers the flat-bottomed bore and chip-free wall quality that woodworking joinery demands. The right-hand rotation and super strength SP steel construction combine to give this small-diameter Forstner bit long-lasting cutting performance across both straight plunge cuts and angled entry positions.

Key Features

• Super Strength SP Steel Construction - the blade material resists wear and maintains a sharp edge through repeated boring cycles, giving you long-lasting cutting performance without frequent resharpening downtime.
• 2 Precision-Ground Spurs (V2) - dual spurs score the wood fiber perimeter ahead of the main cutting edges, producing clean, chip-free bore walls that require little or no sanding before hardware installation.
• 2 Cutting Teeth (Z2) - twin cutting edges remove waste efficiently while keeping the bit balanced in the hole, reducing vibration and helping maintain a truly flat bottom on every plunge.
• 8x30mm Shank - the 8mm shank diameter securely seats in standard drill press chucks and compatible handheld drills, giving a stable, chatter-free grip during the boring operation.
• Right-Hand Rotation (RH) - standard clockwise cutting direction is compatible with all conventional drill presses and handheld drills, so no special setup or reverse-rotation machines are required.
• Flat-Bottom Hole Geometry - the Forstner cutting profile produces a flat floor inside every bore, which is essential for clean hinge seating, shelf pin installation, and bracket/strap niches where a drilled pocket must sit flush.
• Angled Entry Capability - the centered geometry allows plunge cuts at any angle into the workpiece face, making it straightforward to create oval openings, arched cutouts, or angled niches without wandering off center.

Why This Product

• Purpose-built for small-diameter flat-bottom boring - the 15mm diameter hits the sweet spot for hinge cup pilot holes, shelf pin sockets, and bracket niches where larger bits would remove too much material and smaller bits lack the flat-floor profile joinery requires.
• Handles angled and overlapping cuts that twist bits cannot - because the Forstner geometry is guided by the rim rather than a center spur alone, this bit can drill entry holes at any angle and even overlap existing bores, opening up design options for arched and oval openings that standard twist or spade bits cannot produce cleanly.
• SP steel keeps performance consistent over time - super strength steel holds its edge longer than standard carbon steel alternatives, meaning fewer interruptions to resharpen or replace the bit mid-project.
• Compact 90mm total length suits confined setups - at 3-35/64 in. overall, the bit is short enough to use comfortably in a drill press with limited throat clearance, yet still provides enough shank engagement for a secure, wobble-free chuck grip.

Specifications

• Manufacturer Part Number: 537.150.31
• Brand: CMT Orange Tools
• Product Type: Forstner Bit
• Diameter: 15mm
• Total Length: 3-35/64 in.
• Shank: 8x30mm
• Number of Spurs: 2
• Number of Teeth: 2
• Blade Material: Super Strength (SP) Steel
• Rotation: Right-Hand (RH)

Approved Applications

• Drilling precise flat-bottom holes in softwood
• Hinge cup and cabinet hinge installation
• Shelf pin and hardware installation
• Creating niches for the installation of brackets and straps
• Creating niches for frames and grids
• Creating oval and arched openings at any angle