Description
Drillco 420A240 1-5/8 Bridge Reamer Taper Shank is designed for precision hole enlargement in bridgework, shipbuilding, and structural steel fabrication where exact diameter accuracy is essential. The pilot-type point ensures accurate alignment and smooth entry into small or off-center holes, while the 3-flute design improves centering and delivers a cleaner finish. Its reduced shank makes it especially suitable for portable drilling applications.
Features:
- Pilot-type point for precise alignment and easy entry
- 3-flute configuration enhances centering and reduces chatter
- Reduced shank for compatibility with portable drilling tools
- Common countersink angles: 60°, 82°, 90°, 100°
- Durable construction for demanding steel fabrication work
Benefits:
- Achieves consistent, accurate hole diameters
- Produces smoother finishes with less vibration
- Adaptable for both stationary and portable operations
Technical Specifications:
- Model: 420A240
- Size: 1-5/8″
- Type: Bridge Reamer – Taper Shank
- Point Type: Pilot-type
- Flute Type: 3-flute
- Countersink Angles: 60°, 82°, 90°, 100°
- Applications: Bridgework, ship construction, structural steel fabrication






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