Drillco 7/16 Spiral Flute 7/16 Shank Construction Reamer (427E128) (Model 4.27E+130)
Drillco 427E128 7/16 Spiral Flute 7/16 Shank Construction Reamer is designed for heavy-duty reaming in structural steel fabrication, bridge construction, and automotive assembly work. This cobalt HSS reamer is ideal for enlarging and aligning holes in harder metals with high precision. The tapered point allows smooth entry into misaligned holes for accurate results. Its spiral flute design improves chip removal and ensures smoother cutting action. Made from premium-grade cobalt high-speed steel HSS, it drills approximately 30% faster than standard HSS and offers excellent durability. The 135° self-centering split-point reduces walking and lowers thrust requirements, while the bronze surface treatment provides high lubricity for longer life. The 3-flats reduced shank ensures a secure grip in drill chucks. Proudly made in the USA.
7/16" spiral flute construction reamer with 7/16" shank
Tapered point for easy entry into misaligned holes
Premium-grade cobalt HSS drills harder materials faster than standard HSS
135° self-centering split-point reduces walking and thrust
Bronze surface treatment for high lubricity
Spiral flute design for smooth cutting and efficient chip removal
3-flats reduced shank for secure chuck grip
Ensures precise alignment and enlargement of holes in harder metals
Reduces walking and improves drilling stability
Drills faster and lasts longer with cobalt HSS and bronze surface
Prevents slippage with 3-flats shank design
Technical Specifications:
Type: Spiral Flute Construction Reamer
Shank Size: 7/16"
Flute Type: Spiral
Point Type: Tapered 135° self-centering split-point
Material: Premium Cobalt High-Speed Steel HSS
Surface Treatment: Bronze
Shank Design: 3-flats reduced shank
Applications: Structural steel fabrication bridge construction automotive assembly
Product identification
- Brand: Drillco
- Model / MPN: 4.27E+130
