Import BDNA-C105428 Extra Length Drill Bit 7/16 in Hss

Product Description

The IMPORT BDNA-C105428 is an extra length high-speed steel drill bit designed for drilling through thick stock, deep holes, and hard-to-reach applications where a standard length bit falls short. Built from high-speed steel with an oxide finish, this bit measures 12 inches in overall length with a 9-inch flute length, giving it significantly more reach than conventional jobber-length bits. The 118-degree standard point angle and web-thinned tip reduce thrust during entry and keep the bit on center. It runs right-hand cutting with a regular spiral and two flutes, making it suitable for a wide range of ferrous and non-ferrous materials.

This drill bit is suited for maintenance, mechanical, electrical, and plumbing trade applications where deep boring or extended reach is required. Common scenarios include drilling through structural members, deep wall sections, and multi-layer assemblies. The straight-cylindrical shank fits standard drill chucks without adapters, making it easy to mount in corded or cordless drills and drill presses. It is a general-purpose grade bit appropriate for production and service work.

Key Features

• 12-inch overall length for extended reach in deep-hole applications
• 9-inch flute length for effective chip evacuation over long drill depths
• 118-degree standard point angle with web-thinned tip for reduced entry thrust
• High-speed steel construction with oxide finish for heat and wear resistance
• Regular right-hand spiral with 2 flutes and tapered web configuration
• Straight-cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed as a general-purpose extra length drill bit compatible with standard drill chucks and drill press spindles that accept straight-cylindrical shanks.

Installation Notes

Installation of this bit is performed by trade technicians including electricians, plumbers, HVAC installers, and mechanical contractors. Secure the straight-cylindrical shank firmly in a keyed or keyless chuck before operation. Use appropriate feed rate and cutting speed for the material being drilled, and apply cutting fluid when boring through ferrous metals to extend bit life. Ensure workpieces are clamped securely before drilling to prevent movement and bit breakage.