CMT 811.620.11 Straight Bit Short Series - 12mm Diameter, 1/2 in. Shank is a precision-ground, double-flute router bit built for demanding production environments where clean, accurate cuts in wood and composite materials are non-negotiable. Engineered from special fatigue-proof steel and micrograin carbide, this straight routing bit delivers the durability and consistency required for dadoes, grooves, mortises, and template routing across a wide range of workpiece materials - from solid hardwood and softwood to plywood and composites. The short series profile keeps the bit rigid and reduces deflection, making it an excellent choice for CNC routing machines, router tables, and handheld routers alike.

Key Features

• Micrograin Carbide Cutting Edges - harder and denser than standard carbide, this material extends cutting life even under heavy production workloads, reducing the frequency of bit changes and downtime.
• Fatigue-Proof Steel Body - the shank and body are machined from special fatigue-proof steel that resists stress fractures during sustained or heavy routing passes, contributing to a longer service life and safer operation.
• CMT Orange Non-Stick PTFE Coating - the proprietary orange coating prevents resin, pitch, and other residue from bonding to the bit surface, making cleanup faster and helping the bit run cooler during extended use.
• 2-Flute (Double-Edge) Design - two cutting edges per pass produce a balanced cut with a smooth finish, making this bit well-suited for joinery work in plywood and natural wood where surface quality matters.
• Short Series Profile - the compact 2-1/2 in. total length with a 1 in. cutting height reduces vibration and maximizes rigidity, resulting in tighter tolerances and cleaner cut walls compared to longer bit profiles.
• Right-Hand Rotation - engineered for standard right-hand (RH) router operation, ensuring compatibility with the vast majority of handheld routers, router tables, and CNC spindles.
• Strict Quality Testing - every bit is tested for cutting tolerance, balance, and concentricity before leaving the factory, so you can trust the bit to run true and produce consistent results from the first pass.

Why This Product

• Built for production-scale demands - the combination of micrograin carbide and fatigue-proof steel means this bit is engineered to handle repetitive, high-volume routing tasks without premature wear, making it a practical choice for shops running continuous production cycles.
• Versatile across common sheet goods and solid wood - plywood joinery, composite panels, and natural wood cuts are all within this bit's intended range of use, giving woodworkers and production operators a single bit that works across multiple material types without compromise.
• Reduced maintenance and cleanup time - the PTFE non-stick coating actively resists resin and pitch buildup, which means less time spent cleaning the bit and more time cutting - a measurable efficiency gain in busy shop environments.
• Confidence in every cut through verified quality - with strict testing for balance, concentricity, and cutting tolerance applied to every individual bit, this straight router bit delivers predictable, repeatable results that matter in precision joinery and template routing applications.

Specifications

• Manufacturer Part Number: 811.620.11
• Brand: CMT Orange Tools
• Diameter: 12mm
• Cutting Height: 1 in.
• Total Length: 2-1/2 in.
• Shank: 1/2 in.
• Number of Teeth: 2
• Material: HW (Micrograin Carbide)
• Rotation: Right-Hand (RH)
• Product Type: Straight Bit Short Series

Approved Applications

• Straight cuts including dadoes, grooves, and rabbets
• Mortising
• Template routing
• Plywood joinery
• Production routing in composites and natural woods