Description
Drillco 427N220-132 1-5/16 Spiral Flute 1/2 Shank Nitro Construction Reamer is engineered for heavy-duty reaming in structural steel fabrication, bridge construction, and automotive assembly. The Nitro surface treatment adds a hard, protective layer to the reamer, increasing hardness without brittleness. The black and gold finish provides maximum lubricity for smoother cutting. Its spiral flute design improves chip removal and ensures precise hole enlargement and alignment. Made from premium-grade cobalt high-speed steel HSS, it drills harder materials efficiently. The 135° self-centering split-point reduces walking and thrust, while the 3-flats reduced shank ensures a secure fit in drill chucks. Proudly made in the USA.
Features:
- 1-5/16″ spiral flute Nitro construction reamer with 1/2″ shank
- Nitro surface treatment adds hardness without brittleness
- Black and gold finish for maximum lubricity
- Premium-grade cobalt HSS drills harder materials efficiently
- 135° self-centering split-point reduces walking and thrust
- 4 flutes for improved material removal rate and surface finish
- Longer shank suitable for turret lathe applications
- 3-flats reduced shank for secure chuck grip
- Made in the USA
Benefits:
- Provides precise hole enlargement and alignment in structural applications
- Reduces walking and improves drilling stability
- Drills harder materials efficiently with cobalt HSS and Nitro surface
- Optimized flute design improves cutting speed and surface finish
- Longer shank allows compatibility with turret lathes
Technical Specifications:
- Model: 427N220-132
- Type: Spiral Flute Nitro Construction Reamer
- Size: 1-5/16″
- Shank Size: 1/2″
- Flute Type: Spiral, 4 flutes
- Point Type: Tapered 135° self-centering split-point
- Material: Premium Cobalt High-Speed Steel HSS
- Surface Treatment: Nitro (black and gold finish)
- Shank Design: 3-flats reduced shank
- Applications: Structural steel fabrication bridge construction automotive assembly turret lathe use
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