Description
Drillco 420A142 21/32 Bridge Reamer Taper Shank is designed for precise hole enlargement in bridgework, ship construction, and structural steel fabrication where exact diameter accuracy is essential. Featuring a pilot-type point, it ensures accurate alignment and smooth entry into both standard and off-center holes. The 3-flute design enhances centering ability and produces clean, consistent finishes, while the combination of a reduced shank and 3-flute construction makes it ideal for portable drilling applications.
Features:
- Pilot-type point for accurate alignment and easy hole entry
- 3-flute design improves centering ability
- Reduced shank for compatibility with portable drilling tools
- Common countersink angles: 60°, 82°, 90°, 100°
- Durable construction for long-lasting performance
Benefits:
- Ensures precision in structural steel and heavy-duty applications
- Produces smoother finishes with reduced vibration
- Versatile for both stationary and portable drilling operations
Technical Specifications:
- Model: 420A142
- Size: 21/32″
- 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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