HSS Countersink Drill Bits

Drillco's HSS countersink drill bits are the professional's choice for creating the precise countersink holes needed for flush-mounting wood screws, rivets, or machine fasteners. Manufactured from premium high speed steel (HSS), these single flute and deburring tools ensure your fasteners sit perfectly even with the material surface. Unlike a standard twist drill, these tools are optimized for smooth chamfering and removing a leftover burr after drilling. For applications involving stainless steel, we recommend pairing these with a cobalt drill bit to prevent overheating. Use our filters to select the specific shank style or metric equivalent you need for your drill press or handheld power tool.

• 60° Degree: Ideal for centering and combined drill operations.
• 82° Degree: The industrial standard for countersinking flat head screws.
• 90° Degree: Primarily used for chamfering, deburring, and general metal fabrication.
• 100° Degree: Specialized for aerospace rivets and specific heavy-industrial fastening.

Your Nationwide Distributor for HSS Countersink Drill Bits

As a veteran-owned business, Fasteners Etc., Inc. is a premier nationwide distributor of high-performance HSS countersink drill bits. We serve machine shops and industrial contractors across the United States with a comprehensive inventory of cutting tools, including individual hss countersink bits and options for a full countersink drill bit set.

Whether you are working with carbon steel in a CNC environment or performing manual maintenance on the jobsite, we provide the technical expertise, volume discounts, and fast shipping you require. Trust us for all your industrial fastening needs.

Ready to Order?
Contact our sales team today for expert help selecting the correct angle for your project, or request a quote to receive competitive pricing for bulk industrial orders and commercial bids.