CMT 537.100.31 Forstner Bit - 10mm Diameter, 8mm Shank is a precision boring tool engineered in super strength SP steel for drilling clean, flat-bottom holes in softwood and light hardwood. Designed for right-hand rotation, this 10mm Forstner bit delivers repeatable, accurate results whether you are installing cabinet hinges, shelf pins, or hardware brackets - or routing oval and arched openings at virtually any angle. The combination of 2 precision-ground cutting edges and 2 scored spurs makes it a dependable choice for woodworkers who need crisp, chip-free bores without tear-out on the surface face.

Key Features

• Super Strength SP Steel Construction - the SP steel body holds a sharp edge longer than standard tool steel, delivering long lasting cutting performance across repeated drilling sessions without frequent resharpening.
• 2 Precision-Ground Cutting Edges - dual cutting edges work together to shear wood fibers cleanly at the base of the bore, producing a flat, smooth bottom that is ready for hardware installation without additional preparation.
• 2 Ground Spurs (V2) - the spurs score the perimeter of the hole ahead of the cutting edges, preventing grain tear-out and leaving clean, defined bore walls - critical for visible or finish-grade softwood work.
• Right-Hand Rotation (RH) - compatible with standard drill presses and handheld drills, allowing the bit to be used with conventional chuck direction without adapters or special tooling.
• 8x30mm Shank - the 8mm round shank seats securely in standard drill press and handheld drill chucks, reducing slippage and maintaining concentricity during plunge cuts.
• 10mm Cutting Diameter - a compact diameter suited to small hardware installations such as shelf pins, bracket niches, and frame recesses where larger bits would remove too much material.
• Total Length of 3-35/64 in. - sufficient reach for most through-board and stopped-hole applications without requiring an extension, while remaining compact enough for controlled handheld use.

Why This Product

• Flat-bottom boring at a precise 10mm diameter makes this bit the right tool for recessing shelf pin hardware, hinge cups, and bracket straps flush with the surface - applications where a tapered or spade bit would leave an unusable cavity.
• SP steel construction provides long lasting cutting performance compared to standard carbon steel alternatives, meaning fewer replacements and more consistent results across production quantities of softwood parts.
• The ability to drill at any angle - including oval and arched entry points - gives furniture makers and finish carpenters flexibility to create decorative niches and custom openings that standard bits cannot achieve.
• With a compact 10mm diameter and an 8mm shank, this bit fits directly into commonly available drill press and handheld drill chucks, requiring no special collet adapters for everyday workshop use.

Specifications

• Manufacturer Part Number: 537.100.31
• Brand: CMT Orange Tools
• Product Type: Forstner Bit
• Diameter: 10mm
• Total Length: 3-35/64 in.
• Shank: 8x30mm
• Number of Cutting Edges: 2
• Number of Spurs: 2
• Blade Material: Super Strength (SP) Steel
• Rotation: Right-Hand (RH)

Approved Applications

• Drilling precise flat-bottom holes in softwood
• Installing hinges, shelf pins, and cabinet hardware
• Creating bracket and strap niches
• Recessing frame and grid mounting points
• Creating oval and arched openings at any angle