Description
Drillco 91N328 2‑7/16 Annular Cutter 1″ DOC Nitro is designed for high-efficiency broach cutting, allowing the creation of large-diameter holes with reduced energy, lower thrust, and faster penetration. Constructed from premium-grade cobalt, this cutter ensures durability and precision. By removing only the periphery of the hole and ejecting a slug, it provides clean, accurate results for industrial and professional applications.
Features:
- Premium grade cobalt for milling harder materials
- Center cutting tip allows plunging, pocketing, and holemaking
- Two flutes for efficient chip removal and smoother cutting
- Bright finish enhances lubricity and reduces friction
- Round shank with one flat ensures secure attachment
- Made in USA for consistent quality and reliability
- Broach design removes only the hole periphery, ejecting a slug
Benefits:
- Faster and more efficient large-diameter hole cutting
- Reduced thrust and effort for smoother operation
- Durable construction for extended tool life
Technical Specifications:
- Model: 91N328
- Diameter: 2‑7/16″
- Depth of Cut (DOC): 1″
- Type: Annular Cutter
- Material: Nitro-treated cobalt
- Flutes: 2
- Shank: Round with 1 flat for secure attachment
- Application: Large diameter hole cutting, plunging, pocketing, and contouring in metal






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