Description

Drillco 428A216 1-1/4 High Spiral Flute 3/4 Shank Construction Reamer is designed for heavy-duty reaming in structural steel fabrication, bridge construction, and other demanding assembly applications. Its tapered point and high spiral flute design allow smooth entry into misaligned or undersized holes while promoting efficient chip removal and precise cutting performance. The 3-flats reduced shank provides a secure grip in the drill chuck. This reamer features six flutes for faster shearing cuts, reduced chip size, and minimized chatter. It also includes a longer shank suitable for use in turret lathes and countersinking angles commonly available at 60°, 82°, and 90°. Made from premium materials and crafted in the USA for reliable performance and durability.

Features:

1-1/4″ high spiral flute construction reamer with 3/4″ reduced shank
Tapered point for smooth entry into misaligned holes
High spiral flute design for efficient chip removal
Six flutes for very fast shearing cuts and reduced chip size
Minimizes chatter during reaming
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

Benefits:

Precise alignment of structural steel components
Efficient chip removal with smooth, accurate finishes
Faster and cleaner cuts due to higher flute count
Reduced chatter for improved surface finish
Durable design extends tool life

Technical Specifications:

Model: 428A216
Size: 1-1/4″
Shank Size: 3/4″
Shank Type: 3-Flats Reduced Shank
Flute Type: High Spiral (6 flutes)
Point Type: Tapered
Countersink Angles: 60°, 82°, 90°
Application: Heavy-duty reaming in construction, bridgework, and structural steel fabrication