Description

Drillco 427N208-132 1-1/8 Spiral Flute 1/2 Shank Nitro Construction Reamer is engineered for heavy-duty reaming in structural steel fabrication, bridge construction, and other demanding assembly applications. Its tapered point and spiral flute design provide smooth entry into misaligned or undersized holes while ensuring 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 provides maximum lubricity. The 3-flats reduced shank ensures a secure, slip-resistant grip in the drill chuck. Constructed from premium cobalt high-speed steel (HSS), this reamer can handle harder materials and drills approximately 30% faster than standard HSS. The short screw machine length increases rigidity to reduce breakage. Proudly manufactured in the USA for consistent quality and durability.

Features:

1-1/8″ spiral flute Nitro construction reamer with 1/2″ reduced shank
Nitro surface treatment for hardness and high lubricity
Tapered point for smooth entry into misaligned holes
Spiral flute design for efficient chip removal
3-flats reduced shank ensures secure grip
Premium cobalt HSS for drilling harder materials
Drills ~30% faster than standard HSS
Short screw machine length increases rigidity
Made in the USA for quality assurance

Benefits:

Precise alignment of structural steel components
Handles harder materials with faster drilling performance
Reduces walking and thrust for controlled reaming
Durable surface treatment extends tool life

Technical Specifications:

Model: 427N208-132
Size: 1-1/8″
Shank Size: 1/2″
Shank Type: 3-Flats Reduced Shank
Flute Type: Spiral
Point Type: Tapered
Material: Premium Cobalt High-Speed Steel (HSS)
Surface Treatment: Nitro Black-and-Gold
Application: Heavy-duty reaming in construction, bridgework, and structural steel fabrication