Description
Drillco 425A120 5/16 Bridge Reamer Taper Shank is designed for precision hole enlargement and alignment in structural steel applications. Commonly used in bridge construction, shipbuilding, and heavy steel fabrication, this reamer features a pilot-type point for accurate starting and smooth entry, even in off-center or undersized holes. The 3-flute design enhances centering and stability, while the reduced shank allows for use with portable drilling equipment.
Features:
- 5/16″ bridge reamer with precision-ground taper shank
- Pilot-type point for accurate alignment and reduced walking
- 3-flute geometry for improved centering and smoother cutting
- Reduced shank for compatibility with portable drills
- High-speed steel (HSS) construction for durability and long service life
Benefits:
- Provides accurate and clean hole enlargement in structural steel
- Improves cutting stability and reduces chatter during operation
- Reliable performance in demanding industrial environments
Technical Specifications:
- Model: 425A120
- Size: 5/16″
- Shank Type: Taper Shank
- Flutes: 3
- Point Type: Pilot
- Material: High-Speed Steel (HSS)
- Application: Hole enlargement and alignment in bridgework, shipbuilding, and structural steel fabrication






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