Product Description
CMT 366.080.11 Two Flute Dowel Drill for Through Holes - 5/16" x 44 x 77mm RH is a precision-engineered carbide-tipped boring tool designed for clean, accurate through-hole drilling in panel processing and furniture manufacturing. Built on a super-strength steel body with a tungsten carbide (HW) cutting head, this right-hand rotation dowel drill delivers consistently flat-bottomed, smooth-walled through holes in solid wood, chipboard, MDF, and laminates. The extended 77mm overall length makes it especially well-suited for deep through-hole applications in thick panels where shorter series drills fall short.
Key Features
- HW (Tungsten Carbide) Cutting Head - hard carbide material maintains a sharp cutting edge longer than standard steel tips, reducing downtime for tool changes in high-volume panel processing environments.
- 2 Precision-Ground Cutting Edges (Z2) - dual flutes balance cutting forces evenly around the bore, producing clean hole walls and precise diameter control for tight-fitting dowel connections.
- Precision Balanced Centre Point - keeps the drill centered on entry, preventing walking or wandering so every hole lands exactly on layout, even at production speeds.
- 2 Spiral Flutes - evacuate chips efficiently during the cut, reducing heat buildup and keeping the bore free of debris for a cleaner finished hole.
- PTFE Coating on Spiral Portion - the orange or black P.T.F.E. surface prevents pitch and glue buildup on the flutes, maintaining cutting efficiency and extending tool service life across adhesive-heavy materials.
- Super-Strength Steel Body - a robust shank resists flex and vibration during high-speed boring, contributing to hole accuracy and consistent depth control across large panel runs.
- Parallel Shank with Driving Flat and Length Adjusting Screw (10 x 26mm) - the driving flat locks the drill positively in multi-spindle chucks, while the adjusting screw allows precise depth setting without additional tooling setup time.
- 77mm Total Length - Through Hole Long Series - the extended length reaches through thick panels in a single pass, eliminating the need to reposition or flip workpieces for deep through-hole boring.
- Right-Hand (RH) Rotation - compatible with standard right-hand spindle boring machines and CNC boring centers without requiring spindle reversal or special adapters.
- Through Hole 60 deg. Sharpening Geometry - optimized point angle for through-hole cutting, promoting clean entry and exit without blow-out on the panel face.
Why This Product
- The 77mm total length paired with a 44mm cutting height addresses deep through-hole requirements in thick panels - situations where standard short-series dowel drills cannot complete the bore in a single pass.
- The P.T.F.E.-coated spiral actively resists pitch and adhesive deposits that would otherwise slow cutting speed and degrade hole quality in laminates and coated panels - a real advantage in continuous production runs.
- The parallel shank with driving flat and length adjusting screw integrates directly with multi-spindle boring machines and CNC boring centers, making setup repeatable and secure without additional fixturing.
- The HW carbide head combined with 2 precision-ground cutting edges means fewer tool changes and more consistent hole quality across chipboard, MDF, hardwood, softwood, plywood, and laminates - a broad material range that suits furniture manufacturing and panel processing lines alike.
Specifications
- Manufacturer Part Number: 366.080.11
- Brand: CMT Orange Tools
- Diameter: 5/16"
- Cutting Height: 44mm
- Total Length: 77mm
- Shank: 10 x 26mm
- Number of Flutes: 2
- Blade Material: HW (Tungsten Carbide)
- Rotation: RH (Right-Hand)
- Sharpening: Through holes 60
Approved Applications
- Drilling through holes for dowel connections in furniture components
- Panel processing on multi-spindle CNC boring machines
- Through-hole boring on CNC boring centers and panel processing centers
- Boring machine operations using an adapter or chuck
- Through-hole drilling in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels
Frequently Asked Questions
What is the difference between a through-hole dowel drill and a blind-hole dowel drill?
A through-hole dowel drill - like this CMT 366.080.11 - is designed to bore completely through a panel from one face to the other, producing a clean exit hole on both sides. The 60 deg. point geometry and spiral flute design are optimized for that full-penetration cut. A blind-hole dowel drill is intended to stop at a preset depth, leaving a flat or shallow-angled bottom inside the panel.
Which machines are compatible with this dowel drill?
This drill is compatible with multi-spindle CNC boring machines, CNC boring centers, panel processing centers, and standard boring machines equipped with an adapter or chuck that accepts a 10 x 26mm parallel shank with a driving flat.
What does the P.T.F.E. coating on the spiral portion do?
The P.T.F.E. (polytetrafluoroethylene) coating applied to the spiral portion of the drill prevents pitch and glue from adhering to the flutes during cutting. This keeps the flutes clear, maintains chip evacuation efficiency, and extends the working life of the tool - particularly important when drilling laminates, coated panels, or any material with adhesive content.
What is the purpose of the length adjusting screw on the shank?
The length adjusting screw on the parallel shank allows the operator to fine-tune the drill's projection depth within the boring head or chuck. This enables precise, repeatable depth setting across multiple spindles without needing separate gauges or trial-and-error adjustments, which is critical for consistent through-hole positioning in production furniture manufacturing.
Reviews
FAQs
Standard Shipping is free on most orders over $50 within the contiguous US. If the order is under $50.00, the shipping is $9.99 set fee for shipping within the contiguous US.
Most of our products will ship within 1 to 3 Business Days. Some Special order products will ship within 2 to 5 Business Days. Preorders will be shipped to you on a first come first serve basis as soon as available from the manufacturer. Items that are "Made-to-Order" (Custom order products) will be shipped when fabrication is completed, shipping and delivery times will vary and depend on manufacturing.
Products that are shipped directly from the manufacturer will have processing and fulfilment times subject to manufacturer availability.
Preorders are shipped on a first come first serve basis as soon as available from the manufacturer, the sooner you place your Preorder the sooner your order will ship.
Freight shipping Policy:
Orders/Items too large or heavy may require special handling/Shipping and may require to be sent by truck. Someone must be present to accept truck deliveries. Standard truck delivery is to a dock facility designed to receive freight. You will be notified within 24 hours of ordering to confirm delivery. Lift gates for deliveries are available for an additional fee.
We offer Financing options through Clicklease
Please email your Return request to info@FactoryDirectSupplyOnline.com
Include the order number and the reason for your return.
All returns, regardless of their categorization, must include all original parts, be in their original packaging, and in the condition in which they were received. You may not qualify to receive a refund If the returned item is used, damaged, missing any parts, or is damaged during return shipping.
Checkout our complete Return policy
You can contact us through our contact page! We will be happy to assist you.