Drillco 9/16 Spiral Flute 1/2 Shank Construction Reamer (427E136) (Model 4.27E+138)
Drillco 427E136 9/16 Spiral Flute 1/2 Shank Construction Reamer is designed for heavy-duty reaming in structural steel assembly fabrication. Its tapered point allows smooth entry into holes that are out of alignment, ensuring precise and efficient enlargement. Made from premium grade cobalt HSS, this reamer can handle harder materials and drill approximately 30% faster than standard HSS. The bronze surface treatment provides high lubricity, while the 3-flats reduced shank ensures a secure grip in the chuck. The shorter screw machine length adds rigidity to minimize breakage during operation.
Premium grade cobalt HSS for harder materials and faster drilling
Self-centering 135° split-point reduces walking and thrust
Bronze surface treatment provides high lubricity
Short screw machine length increases rigidity and reduces breakage
Tapered point for smooth entry into misaligned holes
3-flats reduced shank for secure, non-slip chuck grip
Enables faster and efficient reaming in challenging materials
Durable construction for prolonged industrial use
Improved 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 cobalt HSS
Surface Treatment: Bronze
Shank Style: 3-flats reduced shank
Applications: Fabrication of structural steel assemblies
Origin: Made in USA
Product identification
- Brand: Drillco
- Model / MPN: 4.27E+138
