Drillco 1-7/16 Spiral Flute 3/4 Shank Nitro Construction Reamer (427N228)
Drillco 427N228 1-7/16 Spiral Flute 3/4 Shank Nitro Construction Reamer is designed for heavy-duty reaming in structural steel fabrication, bridge construction, and other demanding assembly applications. Its tapered point and spiral flute design allow smooth entry into misaligned or undersized holes while promoting efficient chip removal and precise cutting performance. The Nitro surface treatment adds a hard, protective layer that increases hardness without brittleness, and the black-and-gold finish ensures maximum lubricity. The 3-flats reduced shank provides a secure, slip-resistant grip. This reamer features four flutes for improved material removal and surface finish, and a longer shank suitable for use in turret lathes. Most common countersink angles are available: 60°, 82°, and 90°. Made in the USA for reliable performance and durability.
1-7/16" spiral flute Nitro construction reamer with 3/4" reduced shank
Nitro surface treatment for hardness and high lubricity
Tapered point for smooth entry into misaligned holes
Four flutes for improved removal rate and surface finish
3-flats reduced shank ensures secure grip
Longer shank suitable for turret lathes
Most common countersink angles available: 60°, 82°, 90°
Made in the USA for quality assurance
Precise alignment of structural steel components
Efficient chip removal with smooth, accurate finishes
Versatile for use with turret lathes and standard drill setups
Durable surface treatment extends tool life
Technical Specifications:
Shank Size: 3/4"
Shank Type: 3-Flats Reduced Shank
Flute Type: Spiral, 4-flute design
Point Type: Tapered
Surface Treatment: Nitro Black-and-Gold
Countersink Angles: 60°, 82°, 90°
Application: Heavy-duty reaming in construction, bridgework, and structural steel fabrication
Product identification
- Brand: Drillco
- Model / MPN: 427N228
