Drillco construction reamer details
Drillco 1-1/4 Spiral Flute 3/4 Shank Construction Reamer (427A216)
Drillco 427A216 1-1/4 Spiral Flute 3/4 Shank Construction Reamer is designed for heavy-duty reaming in structural steel fabrication, bridgework, and other demanding assembly applications. The tapered point allows smooth entry into misaligned or undersized holes, ensuring accurate alignment of components. The spiral flute design provides efficient chip removal and precise cutting performance, while the 3-flats reduced shank offers a secure, slip-resistant grip in the drill chuck. Made from premium high-speed steel (HSS) with a black oxide finish, this reamer delivers long-lasting durability and consistent results. Its short screw machine length increases rigidity to reduce breakage. Proudly manufactured in the USA for reliable quality and performance.
1-1/4" spiral flute construction reamer with 3/4" 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 HSS construction for extended tool life
Black oxide finish improves wear resistance
Short screw machine length increases rigidity
Made in the USA for quality assurance
Accurate alignment of structural steel components
Reduces walking and thrust for controlled reaming
Reliable performance under heavy-duty working conditions
Technical Specifications:
Shank Size: 3/4"
Shank Type: 3-Flats Reduced Shank
Flute Type: Spiral
Point Type: Tapered
Material: Premium High-Speed Steel (HSS)
Surface Treatment: Black Oxide
Application: Heavy-duty reaming in construction, bridgework, and structural steel fabrication
Product identification
- Brand: Drillco
- Model / MPN: 427A216





