Drillco construction reamer details
Drillco 25/32 Spiral Flute 1/2 Shank Construction Reamer (427A150)
Drillco 427A150 25/32 Spiral Flute 1/2 Shank Construction Reamer is built for heavy-duty reaming tasks, especially in the fabrication of structural steel assemblies. Its tapered point ensures smooth entry into holes that are out of alignment, allowing for precise and efficient enlargement. Made from premium grade HSS with a black oxide finish, this reamer delivers long-lasting durability. The 3-flats reduced shank provides a secure grip in the chuck, while the shorter screw machine length enhances rigidity and reduces breakage during operation.
Premium grade HSS construction for extended tool life
Self-centering 135° split-point reduces thrust and walking
Black oxide surface treatment improves durability
Short screw machine length increases rigidity and minimizes breakage
Tapered point for smooth entry into misaligned holes
3-flats reduced shank for secure, non-slip chuck grip
Ensures accurate reaming in challenging construction applications
Minimizes tool wear for prolonged industrial use
Provides better chip removal and cutting efficiency
Reduces risk of breakage under heavy loads
Technical Specifications:
Type: Spiral Flute Construction Reamer
Shank Size: 1/2"
Point Type: Tapered point, 135° split-point
Material: Premium grade HSS
Surface Treatment: Black oxide
Shank Style: 3-flats reduced shank
Applications: Fabrication of structural steel assemblies
Origin: Made in USA
Product identification
- Brand: Drillco
- Model / MPN: 427A150





