Description
Drillco 427N164 1 Spiral Flute 1/2 Shank Nitro Construction Reamer is designed for heavy-duty reaming in structural steel fabrication, bridgework, and assembly applications. This Nitro construction reamer features a tapered point with a black and gold surface treatment that provides a hard protective layer, increasing hardness without brittleness while delivering maximum lubricity. The spiral flute design enhances chip removal, reduces heat buildup, and ensures precise, clean hole enlargements. Made from premium-grade cobalt high-speed steel (HSS), it can drill harder materials approximately 30% faster than standard HSS. The self-centering 135° split-point minimizes walking and lowers thrust for stable, controlled cutting, while the shorter screw-machine length adds rigidity to reduce breakage. The 3-flats reduced shank ensures a secure, slip-free grip in the chuck.
Features:
- 1-inch Nitro spiral flute construction reamer with 1/2-inch shank
- Black and gold Nitro surface treatment for hardness and maximum lubricity
- Tapered point for smooth entry into misaligned or undersized holes
- Spiral flutes for efficient chip removal and consistent cutting
- Premium-grade cobalt HSS for harder materials and faster cutting
- Self-centering 135° split-point minimizes walking and reduces thrust
- Short screw-machine length for added rigidity and reduced breakage
- 3-flats reduced shank prevents slipping in the chuck
Benefits:
- Ensures precise, clean, and smooth hole enlargements
- Handles harder materials efficiently and faster than standard HSS
- Maximizes tool life and cutting performance with Nitro surface treatment
- Prevents tool wander for improved drilling stability
- Durable construction minimizes replacement frequency and downtime
Technical Specifications:
- Model: 427N164
- Size: 1 inch
- Shank Size: 1/2 inch
- Shank Type: 3-flats reduced shank
- Point Type: Tapered point, 135° split-point
- Flute Type: Spiral flutes
- Material: Premium-grade cobalt HSS
- Surface Treatment: Black and gold Nitro coating for hardness and lubricity
- Length Type: Short screw-machine length
- Manufacture: Made in USA
- Applications: Structural steel fabrication, bridgework, assembly, hole alignment, hard material reaming
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