Robert Bosch Tool Group NKST08 Short Auger Bit 1/2 in

Product Description

The ROBERT BOSCH TOOL GROUP NKST08 is a short auger bit designed for wood boring applications where nails are present in the material. Part of the Daredevil Nailkiller line, this bit measures 0.5 inches in diameter with a 4-inch flute length and 7.5 inches overall length. It is built for carpenters, electricians, and plumbers who need to bore through framing lumber that may contain embedded nails. Dual cutting edges allow the bit to cut through nails while maintaining balanced drilling, and an open-faced flute design promotes efficient chip removal to keep the bore clean during operation.

The NKST08 is suited for rough-in work in residential and light commercial framing, where drilling through dimensional lumber and engineered wood is a daily task. Its reinforced tip is built to withstand repeated nail impacts without premature failure, making it a reliable option for retrofit and remodel work where embedded fasteners are common. The reamer edge improves entry and exit hole quality, reducing splintering at the back face of the workpiece. A 5/16-inch shank diameter fits standard drill chucks used by electricians, plumbers, and general contractors.

Key Features

• Dual cutting edges deliver balanced drilling and easier nail cutting
• Open-faced flute design promotes improved chip removal during boring
• Reinforced tip withstands repeated nail impacts for extended service life
• Reamer edge improves entry and exit hole quality on both faces of the workpiece
• Rated for 9 times the life compared to standard bits when drilling through nails
• 5/16-inch shank fits standard drill chucks

Compatibility

Designed as an OEM-style replacement-compatible short auger bit for use with standard 3-jaw drill chucks accepting a 5/16-inch hex or round shank in cordless and corded drills used in wood framing and rough-in applications.

Installation Notes

Installation of this bit is performed by licensed electricians, plumbers, and carpenters during rough-in framing work. Ensure the drill chuck is fully tightened before operation and confirm the bit is properly seated to prevent slipping under load. Always wear appropriate eye protection when boring through material that may contain embedded nails or fasteners. Follow applicable code requirements for hole sizing and placement in structural members per NEC, IPC, or IFGC as applicable to the trade.