Drillco 428N3S Nitro 3pc Set 1/2″–3/4″ is designed for heavy-duty reaming in structural steel fabrication, bridge construction, and automotive assembly. This 3-piece set covers common sizes from 1/2″ to 3/4″, providing efficient chip removal and precise hole enlargement. Nitro surface treatment adds hardness without brittleness, while the black and gold finish ensures maximum lubricity. The 3-flats reduced shank guarantees a secure fit in drill chucks. Made in the USA.
Features:
- 3-piece Nitro construction reamer set covering 1/2″ to 3/4″ sizes
- Tapered points for easy entry into off-center holes
- High spiral flute design with 6 flutes for fast shearing cuts
- Higher flute count reduces chip size and chatter
- 3-flats reduced shank for secure chuck grip
- Black and gold Nitro surface treatment for added hardness and lubricity
- Jobber length suitable for most use cases
- Made in the USA
Benefits:
- Ensures precise hole enlargement and alignment in structural applications
- Efficient chip removal and reduced chatter improve cutting quality
- Nitro treatment allows drilling harder materials without brittleness
Technical Specifications:
- Model: 428N3S
- Type: High Spiral Flute Nitro Construction Reamer Set
- Size Range: 1/2″–3/4″
- Shank Size: 1/2″
- Flute Type: High Spiral, 6 flutes
- Point Type: Tapered
- Material: Premium Cobalt HSS
- Shank Design: 3-flats reduced shank
- Surface Treatment: Black and gold Nitro finish
- Applications: Structural steel fabrication, bridge construction, automotive assembly
