Robert Bosch Tool Group NKST09 Auger Bit 9/16 X 7-1/2 Inch

Product Description

The ROBERT BOSCH TOOL GROUP NKST09 is a 9/16-inch by 7-1/2-inch auger bit engineered for wood boring in applications where embedded nails are a routine obstacle. Built under the Daredevil Nail Killer line, this bit features dual cutting edges that deliver balanced drilling while maintaining the ability to cut through nails without immediate edge failure. The open-faced flute design accelerates chip removal, reducing clogging during deep-bore work. A reinforced tip is designed to withstand repeated nail impacts, and a reamer edge improves both entry and exit hole quality. It is rated for up to 9 times longer life compared to standard bits when encountering nail hits.

This auger bit is suited for rough framing, remodel work, and retrofit electrical or plumbing installations where wood members may contain nails, screws, or other embedded fasteners. Electricians running conduit or wire through framed walls and floors, as well as plumbers boring through plates and joists, will find this bit appropriate for daily production use. The 7-1/2-inch length provides adequate reach for most single-member and double-plate boring tasks common in residential and light commercial construction.

Key Features

• Dual cutting edges provide balanced drilling and easier nail cutting
• Open-faced flute design improves chip ejection during deep boring
• Reinforced tip withstands repeated contact with embedded nails
• Reamer edge improves entry hole and exit hole quality
• Rated for 9 times longer service life versus standard auger bits when hitting nails
• 9/16-inch diameter by 7-1/2-inch length for single-member and double-plate applications

Compatibility

Designed as a replacement or production-stock auger bit for use with standard hex-shank or auger-chuck compatible drills and right-angle drill drives commonly used in electrical, plumbing, and framing trades.

Installation Notes

This bit is intended for use by electricians, plumbers, and carpenters boring through wood framing. Ensure the drill is set to an appropriate speed for the diameter and material before starting the bore. Wear appropriate eye protection, as nail contact can produce metal fragments. Inspect the bit tip and cutting edges after repeated nail strikes and retire the bit if deformation affects hole quality or balance.