Shell-Mount Countersink
The countersink fastens directly onto the twist of a compatible D100–D155 metric drill with a set screw, combining pilot drilling and countersinking in one setup.
Royce Ayr Carbide Tipped Shell Countersink – 15.5mm Diameter – 5mm Drill – 90° – Left-Hand
CA$999.99
Out of stock
SKU
D175.050L
Product Type
Carbide Tipped Shell Countersink
Series
D175
Countersink Diameter
15.5 mm
Drill Size
5 mm
Cutting Edges
2 / Z2
Rotation
LH / Left Hand
Countersink Angle
90°
Cutting Material
Carbide Tipped
Mounting
Set Screw onto Twist Drill
Compatible Drills
Royce Ayr D100–D155 Metric Drills
Machine Type
CNC Router / Compatible Drilling Equipment
Application
Pilot Drilling + Screw-Head Countersinking
Carbide Tipped Shell
Countersink
Shell Countersink
Left-hand carbide-tipped shell countersink for use with Royce Ayr D100–D155 metric drills. The verified D175.050L configuration uses a 15.5 mm countersink diameter, 5 mm drill size, two cutting edges, and LH rotation. The shell fastens onto the twist drill with a set screw and produces a 90-degree countersink for compatible screw heads.
D=15.5 mmCountersink Diameter
DS=5 mmDrill Size
Z=2Cutting Edges
LHLeft-Hand Rotation
Shell Countersink
Carbide-tipped shell-style countersink designed to mount directly onto a compatible metric twist drill. The two-edge geometry forms a 90-degree screw-head seat while preserving the drill as the pilot.
Carbide TippedZ215.5 mm · 5 mmSKU D175.050L
Designed for Royce Ayr D100–D155 metric drills and compatible CNC routing or drilling setups. A set screw secures the countersink shell to the twist of the drill.
Main Product Description
The Royce Ayr D175.050L is a Carbide Tipped Shell Countersink in the D175 drilling family. Royce Ayr's current official product database verifies a 15.5 mm countersink diameter, 5 mm drill size, two cutting edges, and left-hand rotation for this exact SKU.
The shell countersink is designed for use with D100–D155 metric drills. It fastens onto the twist of the drill with a set screw, allowing the pilot drill and countersink to operate as one assembly. Royce Ayr specifies the geometry for producing a 90-degree countersink for compatible screw heads.
The active cutting edges are carbide tipped, so the material image is routed to Titan's carbide panel. Confirm the selected D100–D155 drill matches the required 5 mm drill size and left-hand rotation, then verify set-screw engagement, shell position, runout, drilling depth, RPM, feed rate, extraction, and workpiece support.
Technical Specifications
Shell Countersink D175.050L
- Royce Ayr
- Carbide Tipped Shell Countersink
- D175.050L
- D175
- Carbide Tipped
- 15.5 mm
- 5 mm
- 2 / Z2
- LH / Left Hand
- 90°
- Set Screw onto Twist Drill
- D100–D155 Metric Drills
- Machine Type: CNC Router / Compatible Drilling Equipment · Industry: Cabinet & Casegoods Manufacturing
- Designed for Royce Ayr D100–D155 metric drills and compatible CNC routing or drilling setups. A set screw secures the countersink shell to the twist of the drill.
Best Fit Applications
90° Screw-Head Countersinking
D100–D155 Metric Drills
Cabinet Panel Drilling
CNC Drilling Operations
Pilot Drill + Countersink Setup
Product Highlights
15.5 mm / 5 mm Configuration
The exact D175.050L configuration pairs a 15.5 mm countersink diameter with a 5 mm drill size and left-hand rotation.
Carbide-Tipped Z2 Cutting
Two carbide-tipped cutting edges form the verified 90-degree countersink while providing the durability expected from carbide woodworking tooling.
Compatibility & Installation Notes
Use D175.050L only with a compatible Royce Ayr D100–D155 metric drill matching the required 5 mm drill size and left-hand rotation. Seat the shell fully on the drill twist, tighten the set screw securely, and verify concentricity, runout, countersink position, drilling depth, RPM, feed rate, extraction, and workpiece support before production. The countersink is specified for a 90-degree screw-head seat.
Compact 90° Countersinking on a 5 mm Pilot Drill
Royce Ayr D175.050L combines a 15.5 mm countersink diameter, 5 mm drill size, two carbide-tipped cutting edges, left-hand rotation, and set-screw mounting for D100–D155 metric drills.
The shell design keeps the pilot drill and countersink together in one controlled setup, producing a 90-degree seat for compatible screw heads in cabinet and panel-drilling operations.