Irwin 25535014 5/8 Inch Hss Countersink Bit 5 Flute

Product Description

The IRWIN 25535014 is a 5/8-inch high speed steel countersink bit designed for clean, accurate countersinking in machinable metals. It features a 5-flute design that reduces vibration during drilling, resulting in smoother hole entry and a cleaner finish. The precision-ground 82-degree tip conforms to standard fastener head angles for flush or recessed seating. A black oxide coating provides corrosion resistance and extends service life in shop and field conditions. The 1/4-inch round shank is compatible with handheld drills and stationary drill presses. HVAC, mechanical, and general trade technicians use this bit when preparing metal panels, brackets, and enclosures for flathead fasteners.

This countersink bit is suited for use on machinable metals in both residential and light commercial applications. Typical uses include countersinking pilot holes in sheet metal, steel brackets, aluminum panels, and similar materials where a flush fastener seat is required. The 1/4-inch round shank fits standard drill chucks on cordless and corded handheld drills as well as bench-mounted drill presses, making it versatile across jobsite and shop environments.

Key Features

• High speed steel construction for durability in machinable metals
• Black oxide coating resists corrosion and reduces friction
• 5-flute design minimizes vibration for a smoother, cleaner cut
• Precision-ground 82-degree tip matches standard flathead fastener angles
• 1/4-inch round shank fits handheld and stationary drill chucks

Compatibility

Designed for use with handheld and stationary drills accepting a 1/4-inch round shank. Suitable for countersinking into machinable metals.

Installation Notes

Secure the workpiece before drilling to prevent movement. Set drill speed appropriate for the metal type and bit diameter — lower speeds are recommended for harder metals to prevent overheating. Power down and unplug or de-energize the drill before changing bits. Wear appropriate eye protection when operating.

Technical Specifications

• Bit Type: Countersink
• Cutting Diameter: 5/8 inch
• Tip Angle: 82 degrees
• Number of Flutes: 5
• Shank Type: Round
• Shank Size: 1/4 inch
• Material: High Speed Steel
• Coating: Black Oxide
• Length: 5.8 inches
• Height: 0.7 inches
• Width: 1.9 inches
• Weight: 0.084 pounds
• Country of Origin: China

Standard Information

• Brand: IRWIN
• Manufacturer Part Number: 25535014