Robert Bosch Tool Group NKST04 Auger Bit 1/4x7.5 Inch

Product Description

The ROBERT BOSCH TOOL GROUP NKST04 is a 1/4-inch by 7-1/2-inch auger bit engineered for wood boring applications where embedded nails are a constant hazard. Marketed under the Daredevil Nail Killer line, this bit features dual cutting edges that balance material removal while cutting through nails cleanly. An open-faced flute design promotes efficient chip evacuation during deep boring. The reinforced tip is built to absorb repeated nail strikes without premature failure, and a reamer edge improves entry and exit hole quality. Bosch rates this bit at 9 times the service life of standard bits in nail-embedded wood. Carpenters, electricians, and plumbers reach for this bit when drilling through framed walls, plates, and joists on rough-in work.

The NKST04 is suited for residential and light commercial rough-in drilling where wood framing contains nails, screws, or staples. Electricians running cable through studs and plates, plumbers boring through floor joists for pipe runs, and carpenters working salvaged or reclaimed lumber will find this bit appropriate for those applications. It accepts a standard 1/4-inch hex shank and is compatible with most corded and cordless drills and impact-rated drivers that accept hex-shank accessories. This bit is sold as part of a package quantity of 60 units per package.

Key Features

• Dual cutting edges deliver balanced drilling and easier nail cutting
• Open-faced flute design improves chip removal during deep boring
• Reinforced tip withstands repeated nail strikes without failure
• Reamer edge improves entry and exit hole quality in wood
• Rated for 9 times the service life of standard bits in nail-embedded wood
• 1/4-inch hex shank fits standard drills and hex-shank drivers

Compatibility

Designed for use in corded and cordless drills and hex-shank-compatible drivers for wood boring applications, including framing lumber and nail-embedded structural wood.

Installation Notes

This bit is installed and used by electricians, plumbers, and carpenters performing rough-in drilling through wood framing. Confirm the drill or driver accepts a 1/4-inch hex shank before use. Always wear appropriate eye protection when boring through material that may contain nails or metal fasteners. Inspect the bit tip for wear or damage after heavy nail contact and replace when cutting performance degrades.