CMT T-Slot Bit - 1-3/8" Diameter x 7/8" Cutting Height, 1/2" Shank by CMT is a precision-ground, right-hand rotation router bit designed to cut T-shaped hanging slots and keyhole profiles in wood and wood-composite panels. Whether you are mounting picture frames, mirrors, plaques, or wall shelving, this bit creates a secure, clean slot that locks onto a screw or bolt head and keeps your wall hanging perfectly level and firmly attached. The 1/2" shank and 2-tooth carbide-tipped design make it a reliable choice for plunge routing operations on a router table, handheld router, or CNC routing machine.

Key Features

• T-Slot Profile - 1-3/8" outer diameter x 7/8" cutting height: Produces a wide undercut channel that accepts bolt or screw heads, creating the hidden hanging slot needed for wall-mounted frames, plaques, and panels - results are clean, consistent, and concealed.
• 2-Tooth Carbide-Tipped (HW) Construction: Hard metal (HW) carbide cutting edges stay sharp through repeated use in solid hardwood, softwood, plywood, MDF, chipboard, laminates, melamine, and plastic - reducing the frequency of bit changes on busy job sites or production runs.
• Right-Hand (RH) Rotation: Standard right-hand rotation is compatible with virtually all handheld routers, router tables, and CNC routing machines, making setup straightforward without any special tooling.
• 1/2" Shank Diameter: The full-size 1/2" shank seats securely in 1/2" collets, reducing vibration during the plunge cut and contributing to a cleaner, more accurate slot profile.
• Compact 2-1/2" Total Length: The overall length keeps the bit stable during plunge entry, minimizing deflection and ensuring the T-slot geometry is reproduced accurately every time.
• Recommended for Plunge Router Use: Optimized for plunge routing technique, allowing the bit to enter the workpiece vertically and then travel horizontally to complete the slot - the correct method for producing a properly shaped T-slot or keyhole hanging recess.
• Compatible with M5, M6, and M8 Hexagonal Head Bolts (per CMT system): Engineered to create slots that work with standard metric hex-head fasteners, enabling removable joints and modular wall-hanging systems.

Why This Product

• Solves the wall-hanging alignment problem: A properly cut T-slot locks onto a fixed screw or bolt head so the workpiece cannot shift, tilt, or fall - ideal for frames, mirrors, plaques, and decorative panels where level placement matters.
• Supports removable and repositionable joints: The T-slot profile allows the mounted piece to slide on and off the wall fastener without tools, making it practical for displays, rotating artwork, or cabinets that need periodic removal.
• Broad material compatibility: With carbide-tipped (HW) cutting edges, this bit handles the full range of panel materials commonly used in woodworking and cabinetry - solid hardwood, softwood, plywood, MDF, chipboard, laminates, melamine, and plastic - without switching bits between materials.
• Fits standard router setups: The 1/2" shank and right-hand rotation mean this bit drops directly into common router tables, handheld plunge routers, and CNC machines with no adapters or special collets required.

Specifications

• Manufacturer Part Number: 850.602.11
• Brand: CMT Orange Tools
• Diameter: 1-3/8"
• Small Diameter: 12.7mm
• Cutting Height: 7/8"
• Total Length: 2-1/2"
• Shank: 1/2"
• Number of Teeth: 2
• Blade Material: Hard Metal Carbide (HW)
• Rotation: Right-Hand (RH)
• Product Type: T-Slot Bit / Keyhole Bit

Approved Applications

• Routing T-slot hanging recesses for wall-mounted frames and plaques
• Cutting keyhole slots for mirrors, shelves, and decorative wall hangings
• Creating slots for M5, M6, and M8 hexagonal head bolt removable joints
• Wall mounting slot routing in solid hardwood, softwood, plywood, MDF, chipboard, laminates, melamine, and plastic