Drillco construction reamer details
Drillco 1-1/16 Spiral Flute 1/2 Shank Nitro Construction Reamer (427N204)
Drillco 427N204 1-1/16 Spiral Flute 1/2 Shank Nitro Construction Reamer is designed for heavy-duty reaming in structural steel fabrication and other demanding metalworking applications. Its tapered point allows smooth entry into misaligned or undersized holes, ensuring precise alignment and accurate sizing. The spiral flute design promotes efficient chip removal and consistent cutting performance, while the 3-flats reduced shank provides a secure, slip-resistant grip. Featuring a Nitro surface treatment with black and gold coating, this reamer achieves increased hardness without brittleness and delivers maximum lubricity. Made from premium grade cobalt high-speed steel (HSS), it can drill harder materials approximately 30% faster than standard HSS reamers.
Tapered point for accurate entry into misaligned or undersized holes
Spiral flute design for smooth cutting and effective chip evacuation
Nitro surface treatment with black and gold coating for hardness and lubricity
Premium grade cobalt HSS for drilling harder materials faster
3-flats reduced shank for a secure, no-slip grip
Self-centering 135° split point reduces thrust and walking
Ensures precise and consistent reaming results
Improves alignment of structural steel components
Handles harder materials efficiently
Prevents slippage during heavy-duty operations
Resists wear and breakage for long-term durability
Produces clean, smooth hole finishes
Technical Specifications:
Size: 1-1/16 in.
Type: Nitro Construction Reamer
Flute Style: Spiral
Shank: 1/2 in. 3-Flats Reduced Shank
Material: Premium Grade Cobalt HSS
Surface Treatment: Nitro, black and gold for hardness and lubricity
Point Type: Tapered with 135° Split Point
Applications: Structural steel fabrication, misaligned hole correction, harder materials
Country of Origin: USA
Product identification
- Brand: Drillco
- Model / MPN: 427N204
