Robert Bosch Tool Group NKST16 Short Auger Bit 1 in

Product Description

The ROBERT BOSCH TOOL GROUP NKST16 is a short auger bit engineered for wood boring in applications where embedded nails are a constant hazard. Built under the Daredevil Nailkiller line, this bit features dual cutting edges that balance drilling load while slicing through nails with reduced bit deflection. The reinforced tip is designed to absorb repeated nail strikes without premature wear. With a 1-inch diameter, a 4-inch flute length, and a 7.5-inch overall length, it fits compact drill applications in framing, remodeling, and rough-in work. The open-faced flute geometry promotes faster chip evacuation to keep the cut clean and reduce heat buildup.

This bit is suited for residential and light commercial framing, rough-in plumbing, electrical, and HVAC work where boring through dimensional lumber or engineered wood is routine. It is particularly useful on remodel and retrofit jobs where existing framing likely contains embedded nails, screws, or other fasteners. The 7/16-inch shank fits standard SDS-compatible chucks and hex-drive bit holders commonly used by electricians, plumbers, and HVAC installers running conduit, pipe, or flex duct through studs and joists. Bosch rates this design for up to 9 times longer life compared to standard auger bits when nail contact is expected.

Key Features

• Dual cutting edges balance drilling load and ease nail cutting in embedded-fastener conditions
• Open-faced flute design improves chip removal and reduces clogging in deep bores
• Reinforced tip withstands repeated nail strikes for extended service life
• Reamer edge improves entry and exit hole quality, reducing tear-out
• Rated for 9x life with nail hits compared to standard auger bits
• Compact 7.5-inch overall length suits tight-space drilling in wall cavities and framing bays

Compatibility

Designed for use with drills and drivers accepting a 7/16-inch hex shank. Fits standard hex-drive chucks and SDS-compatible chuck adapters used across drill and driver platforms common in electrical, plumbing, and HVAC rough-in work.

Installation Notes

Installation of this bit requires a drill or right-angle drill with a compatible 7/16-inch hex chuck. Always confirm the chuck is fully seated and locked before drilling. De-energize any circuits and shut off utilities in the work area before boring through existing framing to avoid contact with live wiring, gas lines, or water supply lines. Eye and hearing protection are standard practice when boring through nail-embedded lumber.