Drillco construction reamer details
Drillco .776 Spiral Flute 1/2 Shank Construction Reamer (427A149)
Drillco 427A149 .776 Spiral Flute 1/2 Shank Construction Reamer is designed for heavy-duty reaming applications such as structural steel fabrication and other demanding metalworking environments. Its tapered point enables smooth entry into undersized or misaligned holes, ensuring proper alignment and accurate hole sizing. The spiral flute design promotes efficient chip removal and smooth cutting action, while the 3-flats reduced shank provides a secure grip to prevent slippage during operation. Made from premium grade high-speed steel (HSS) with a black oxide surface treatment, this tool offers long-lasting durability, wear resistance, and consistent performance under tough working conditions.
Tapered point for accurate entry into misaligned or undersized holes
Spiral flute design for smooth cutting and effective chip evacuation
Premium grade HSS construction for extended tool life
Black oxide surface treatment for improved wear resistance
3-flats reduced shank for a secure, no-slip grip
Self-centering 135° split point reduces thrust and walking
Delivers precise and consistent reaming results
Improves alignment of structural steel components
Prevents slippage during high-torque operations
Resists wear for long-term durability
Produces clean, accurate hole finishes
Technical Specifications:
Type: Construction (Car) Reamer
Flute Style: Spiral
Shank: 1/2 in. 3-Flats Reduced Shank
Material: Premium Grade HSS
Surface Treatment: Black Oxide
Point Type: Tapered with 135° Split Point
Applications: Structural steel fabrication, misaligned hole correction
Country of Origin: USA
Product identification
- Brand: Drillco
- Model / MPN: 427A149

