Studio product shot of the Freud 04-138 double flute straight router bit, featuring a silver 1/4-inch shank and a red Perma-SHIELD coated cutter head.
Technical diagram showing a cross-section of a wood cut, indicating a slot width of 11/16 inch and a cutting depth of 3/4 inch for model number 04-138.
3D computer graphic showing a block of wood with a wide square channel groove cut into the top surface, illustrating the profile created by the straight bit.
Top-down diagram of the router bit profile showing the circular cutting path and the arrangement of the two grey carbide cutting flutes against a red background.
Studio product shot of the Freud 04-138 double flute straight router bit, featuring a silver 1/4-inch shank and a red Perma-SHIELD coated cutter head.
Technical diagram showing a cross-section of a wood cut, indicating a slot width of 11/16 inch and a cutting depth of 3/4 inch for model number 04-138.
3D computer graphic showing a block of wood with a wide square channel groove cut into the top surface, illustrating the profile created by the straight bit.
Top-down diagram of the router bit profile showing the circular cutting path and the arrangement of the two grey carbide cutting flutes against a red background.
Freud

Freud 04-138 11/16 Inch Double Flute Straight Router Bit 1/4 Inch Shank TiCo Carbide for Grooving Edge Routing Wood Composites

Only 1 left
SKU: 04-138
$17.99

Description

Experience Precision Routing and Superior Durability with the Freud 11/16 Inch Double Flute Straight Bit

Elevate the quality of your woodworking projects with the Freud 04-138 11/16 In. Double Flute Straight Bit. Designed for serious woodworkers and professionals alike, this cutter utilizes Freud's exclusive TiCo Hi-Density Carbide, a proprietary formulation engineered to withstand high heat and maintain a razor-sharp edge up to four times longer than standard carbide bits. With its versatile 1/4-inch shank, this tool is perfectly suited for a wide variety of hand-held routers and smaller CNC machines, delivering reliable performance in hardwood, softwood, plywood, and abrasive composites.

The 04-138 is built for efficiency and finish quality. Its computer-balanced double flute geometry features precision-ground hook and shear angles that slice cleanly through wood fibers, minimizing vibration and leaving a surface that requires little to no sanding. The bit is also designed with end relief, allowing for safe and effective plunge cutting—essential for starting grooves in the center of a workpiece or creating deep mortises. Whether you are edge-routing, cutting dadoes, or performing general stock removal, this bit provides the accuracy you demand.

Key Features

  • TiCo Hi-Density Carbide: Specialized carbide blend offers maximum hardness and heat resistance for extended tool life.
  • Double Flute Geometry: Two precision cutting edges ensure fast chip removal and a smooth, chatter-free finish.
  • Plunge Cutting Capability: Relieved tips allow for vertical drilling and starting grooves anywhere on the material.
  • 1/4 Inch Shank: Ideal for use in laminate trimmers, hand-held routers, and tabletop CNC machines.
  • Precision Shear Angles: Optimized geometry reduces cutting resistance and prevents burning on the workpiece.
  • Versatile Application: Perfect for grooving, dadoing, edge-routing, and general material removal.

What's Included:

  • (1) 11/16 In. Double Flute Straight Bit with 1/4 In. Shank (Model 04-138)

Specifications

Model Number 04-138
Overall Diameter (D) 11/16 In.
Shank Diameter (A) 1/4 In.
Carbide Height (h) 3/4 In.
Overall Length (H) 2-1/8 In.
Number of Flutes 2 (Double Flute)
Max RPM 24,000 RPM
Material TiCo Hi-Density Carbide
Bit Type Straight Plunge
Application Material Wood, Plywood, Composites
Pro-Tip: The 11/16" diameter is often useful for creating dados that fit slightly undersized 3/4" plywood or specific shelf thicknesses. Before routing a large project, test the fit on a scrap piece of your specific shelving material to ensure a snug, gap-free joint.