Robert Bosch Tool Group NKST05 Auger Bit 5/16x7.5 in

Product Description

The ROBERT BOSCH TOOL GROUP NKST05 is a 5/16-inch by 7-1/2-inch auger bit engineered for wood boring in applications where embedded nails are a constant hazard. Marketed under the Daredevil Nail Killer line, this bit features dual cutting edges that balance the drilling load while handling nail contact, an open-faced flute that clears chips efficiently, and a reinforced tip designed to take repeated nail hits without failure. A reamer edge improves both entry and exit hole quality. Electricians, plumbers, and carpenters drilling through framed walls and existing lumber reach for this bit when clean holes and nail tolerance are both required.

This auger bit is suited for residential and light commercial rough-in work where trade professionals drill through dimensional lumber, engineered wood, and older framing that may contain hidden fasteners. Typical applications include cable and conduit routing through wall studs, top plates, and floor joists. The 7-1/2-inch length provides adequate reach for standard framing without requiring an extension. The 5/16-inch diameter is a common size for low-voltage cable and smaller conduit pass-throughs.

Key Features

• Dual cutting edges deliver balanced drilling and easier nail cutting
• Open-faced flute design promotes improved chip and debris removal
• Reinforced tip withstands repeated nail hits without deforming
• Reamer edge improves entry and exit hole quality in wood
• Rated for 9 times the service life compared to standard bits when used in nail-embedded lumber
• 5/16-inch diameter by 7-1/2-inch length suits common rough-in pass-through tasks

Compatibility

Designed as a standard-shank auger bit for use with corded or cordless drills and right-angle drill drives commonly used in framing and rough-in trade work.

Installation Notes

This bit is installed by trade professionals including electricians, plumbers, and general contractors performing rough-in drilling. Ensure the drill or driver is set to an appropriate speed for wood boring before use. Inspect the bit tip and cutting edges before each use and replace the bit if the tip shows deformation that compromises drilling performance. Always wear appropriate eye protection when drilling through lumber that may contain nails or other embedded fasteners.