Drillco construction reamer details
Drillco 15/16 Spiral Flute 1/2 Shank Construction Reamer (427E160) (Model 4.27E+162)
Drillco 427E160 15/16 Spiral Flute 1/2 Shank Construction Reamer is engineered for heavy-duty reaming in structural steel fabrication, bridge construction, and other demanding assembly applications. The tapered point allows smooth entry into misaligned or undersized holes, ensuring accurate alignment of components during installation. Its spiral flute design promotes efficient chip removal and precise cutting performance, while the 3-flats reduced shank provides a secure, slip-resistant grip in the drill chuck. Made from premium cobalt high-speed steel (HSS), this reamer can handle harder materials and drills approximately 30% faster than standard HSS. The bronze surface treatment increases lubricity and wear resistance, and the short screw machine length adds rigidity to reduce breakage. Proudly manufactured in the USA for consistent quality and durability.
15/16" spiral flute construction reamer with 1/2" reduced shank
Tapered point for smooth entry into misaligned holes
Spiral flute design for efficient chip removal
3-flats reduced shank ensures secure grip
Premium cobalt HSS for drilling harder materials
Drills ~30% faster than standard HSS
Bronze surface treatment for high lubricity
Short screw machine length increases rigidity
Made in the USA for quality assurance
Accurate alignment of structural steel components
Handles harder materials with faster drilling performance
Reduces walking and thrust for controlled reaming
Technical Specifications:
Shank Size: 1/2"
Shank Type: 3-Flats Reduced Shank
Flute Type: Spiral
Point Type: Tapered
Material: Premium Cobalt High-Speed Steel (HSS)
Surface Treatment: Bronze
Application: Heavy-duty reaming in construction, bridgework, and structural steel fabrication
Product identification
- Brand: Drillco
- Model / MPN: 4.27E+162





