Product Description
CMT 392.150.11 Hinge Boring Bit - 15mm Diameter with 5/16" Parallel Shank is a precision carbide-tipped boring bit engineered for drilling clean, flat-bottom hinge cup holes used in European concealed hinge installations. Manufactured by CMT, this right-hand rotation bit features a super-strength steel body paired with two tungsten carbide (HW) cutting edges and two negatively ground HW spurs - delivering consistently smooth bore walls in solid hardwood, softwood, chipboard, MDF, and plywood. Whether mounted in a drill press, handheld drill, or CNC boring center, this 15mm boring bit gives cabinetmakers and woodworkers the accuracy needed for reliable concealed hinge mounting.
Key Features
- Super-Strength Steel Body with HW (Tungsten Carbide) Construction - the carbide-tipped cutting elements stay sharp longer through repeated boring cycles, reducing replacement frequency and downtime on cabinet production runs.
- Precision-Balanced Centre Point - centers the bit accurately on the workpiece at startup, preventing walking or drift so each hinge cup hole lands exactly where marked.
- 2 HW Precision-Ground Cutting Edges (Z2) - dual carbide cutting edges slice cleanly through the material to produce a true flat-bottom hole, which is essential for proper seating of European concealed hinges.
- 2 HW Negatively Ground Spurs (V2) - the negatively ground geometry scores the material perimeter ahead of the main cut, producing clean, tear-out-free bore walls even in chipboard, MDF, and veneered plywood.
- Parallel (Straight) Shank - 8mm - the straight shank design is compatible with a wide range of machine chucks including drill presses, handheld drills, and CNC boring centers equipped with a standard chuck or adapter, maximizing equipment versatility.
- Right-Hand (RH) Rotation - matches the standard rotation direction of conventional drills and boring machines, ensuring immediate compatibility without any machine reconfiguration.
- 15mm Boring Diameter - matches the industry-standard cup size required for the vast majority of European concealed cabinet hinges, making this bit a direct-fit solution for hinge installation work.
- 60mm Total Length - provides sufficient clearance and reach in drill press and machine setups while keeping the tool compact enough for handheld use.
Why This Product
- Engineered for the standard European hinge cup size - the 15mm boring diameter matches the specification required by most European concealed hinges, so cabinetmakers can bore hinge cups with confidence that hinges will seat and function correctly without modification.
- Versatile machine compatibility via parallel shank - the 8mm parallel shank fits drill presses, handheld drills, and CNC boring centers with a standard chuck or adapter, meaning this single bit travels across multiple machines in a shop without requiring dedicated tooling per machine.
- Negatively ground spurs protect surface quality - when boring veneered panels, MDF door faces, or chipboard carcasses, the V2 negatively ground spurs score cleanly before cutting, preventing the edge chipping and blowout that can ruin finished cabinet doors.
- Dual HW cutting edges provide a true flat bottom - concealed hinges depend on a flat, consistent bore floor to mount at the correct depth and angle; the Z2 carbide-tipped cutting edges deliver that geometry repeatedly, reducing the need for hand-finishing or rework on individual hinge cups.
Specifications
- Manufacturer Part Number: 392.150.11
- Brand: CMT Orange Tools
- Diameter: 15mm
- Total Length: 60mm
- Shank: 8mm Parallel (Straight)
- Rotation: Right-Hand (RH)
- Number of Cutting Edges: 2
- Number of Spurs: 2
- Blade Material: HW (Tungsten Carbide)
- Product Type: Hinge Boring Bit
- Series: Parallel Shank Hinge Boring Bit
Approved Applications
- Drilling flat-bottom hinge cup holes for European concealed hinge installation
- Cabinet door hinge mounting
- Panel processing in furniture manufacturing
- Use in multi-spindle CNC boring machines
- Use in CNC boring centers and panel processing centers
- Use in boring machines with adapter or chuck
- Use in handheld drills with parallel shank compatibility
- Use in drill presses
Frequently Asked Questions
What shank size does this boring bit use, and what machines accept it?
This bit uses an 8mm parallel (straight) shank. That design is compatible with drill presses, handheld drills, CNC boring centers, multi-spindle CNC boring machines, and panel processing centers that accept a standard chuck or adapter sized for an 8mm parallel shank.
Is this bit suitable for drilling hinge cups in MDF and chipboard, or only solid wood?
Yes. The two HW negatively ground spurs (V2) and two HW precision-ground cutting edges (Z2) are designed to bore cleanly in solid hardwood, softwood, chipboard, MDF, and plywood - making this bit well suited for the full range of materials used in cabinet and furniture construction.
What rotation direction does this bit require?
This boring bit is a right-hand (RH) rotation tool. It must be run in the standard forward (clockwise) rotation direction used by conventional drills and boring machines. Do not run it in reverse rotation.
Why does a hinge boring bit need a flat-bottom cutting geometry?
European concealed hinges require a flat-bottom cup hole so the hinge cup seats flush and at the correct depth, allowing the hinge to open, close, and adjust properly. The dual HW cutting edges (Z2) on this bit are precision-ground to produce that flat-bottom bore, which is critical for consistent hinge function across multiple cabinet doors.
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.