Drillco construction reamer details
Drillco 7/8 Spiral Flute 1/2 Shank Construction Reamer (427A156)
Drillco 427A156 7/8 Spiral Flute 1/2 Shank Construction Reamer is designed for heavy-duty reaming applications in structural steel fabrication, bridgework, and assembly operations. This construction (car) reamer features a tapered point for smooth entry into misaligned or undersized holes, ensuring precise and efficient enlargement. The spiral flute design improves chip removal, reduces heat buildup, and enhances cutting performance for demanding industrial environments. Made from premium-grade high-speed steel (HSS), it provides excellent durability and long service life. The self-centering 135° split-point reduces walking and lowers thrust requirements for better control. The black oxide surface treatment extends tool life by providing wear and corrosion resistance. A shorter screw-machine length increases rigidity to minimize breakage, while the 3-flats reduced shank ensures a secure, slip-free grip in the chuck.
7/8-inch spiral flute construction reamer with 1/2-inch shank
Tapered point for easy entry into misaligned or undersized holes
Spiral flute design for efficient chip evacuation and smooth cutting
Premium-grade HSS construction for long-lasting durability
Self-centering 135° split-point minimizes walking and reduces thrust
Black oxide surface treatment enhances corrosion resistance
Short screw-machine length for added rigidity and reduced breakage
3-flats reduced shank prevents slipping in the chuck
Produces accurate, clean, and smooth hole enlargements
Prevents tool wander for improved drilling stability
Efficient chip removal keeps operation cooler and faster
Durable design minimizes tool replacement frequency
Ideal for structural steel, bridgework, and assembly applications
Technical Specifications:
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 HSS
Surface Treatment: Black oxide
Length Type: Short screw-machine length
Manufacture: Made in USA
Applications: Structural steel fabrication, bridgework, assembly, hole alignment, enlargement
Product identification
- Brand: Drillco
- Model / MPN: 427A156
