Description

Drillco 427A208 1-1/8 Spiral Flute 3/4 Shank Construction Reamer is engineered for heavy-duty reaming in structural steel fabrication, bridgework, and assembly projects. This construction (car) reamer features a tapered point for easy entry into misaligned or undersized holes, ensuring precise and efficient hole enlargement. The spiral flute design promotes effective chip removal, reduces heat buildup, and improves cutting performance under demanding industrial conditions. Crafted from premium-grade high-speed steel (HSS), it provides excellent durability and long tool life. The self-centering 135° split-point reduces walking and lowers thrust for stable, controlled cutting. Black oxide surface treatment enhances corrosion resistance and prolongs service life. A shorter screw-machine length increases rigidity to minimize breakage, while the 3-flats reduced shank ensures secure, slip-free gripping in the chuck.

Features:

1-1/8-inch spiral flute construction reamer with 3/4-inch shank
Tapered point for smooth entry into misaligned or undersized holes
Spiral flutes for efficient chip removal and consistent cutting
Premium-grade HSS for long-lasting durability
Self-centering 135° split-point minimizes walking and reduces thrust
Black oxide surface treatment improves corrosion resistance
Short screw-machine length for added rigidity and reduced breakage
3-flats reduced shank prevents slipping in the chuck

Benefits:

Provides precise, clean, and smooth hole enlargements
Prevents tool wander for improved drilling stability
Efficient chip evacuation reduces heat and enhances performance
Durable construction minimizes replacement and downtime
Ideal for structural steel fabrication, bridgework, and assembly applications

Technical Specifications:

Model: 427A208
Size: 1-1/8 inch
Shank Size: 3/4 inch
Shank Type: 3-flats reduced shank
Point Type: Tapered point, 135° split-point
Flute Type: Spiral flutes
Material: Premium-grade HSS
Surface Treatment: Black oxide
Length Type: Short screw-machine length
Manufacture: Made in USA
Applications: Structural steel fabrication, bridgework, assembly, hole alignment, enlargement