Crescent Impact Nut Driver Extractor CAVBXM1D20 5/16 Inch Bolt Biter Tool (1-7/8 Length Bi-Directional Tapered Cr-Mo Magnetic Fastener Extraction)

Crescent CAVBXM1D20 5/16" x 1-7/8" Bolt Biter™ Magnetic Impact Nut Driver & Extractor

The Crescent CAVBXM1D20 5/16-inch x 1-7/8-inch Bolt Biter™ impact nut driver and extractor drives new fasteners and removes severely rounded, corroded, painted, or stripped 5/16-inch hex-head screws across automotive assemblies, HVAC equipment cabinets, and industrial machinery housings. Engineered with an innovative bi-directional tapered socket geometry, this dual-function impact accessory re-engages compromised fastener flanks without slippage while maintaining full forward driving capabilities. Outfitted with impact-grade chrome-molybdenum (Cr-Mo) alloy steel construction engineered to yield up to 50x longer operational life in high-torque impact guns, an integrated industrial rare-earth holding magnet that secures hardware in blind overhead runs, and a corrosion-resistant black oxide finish, it equips HVAC technicians, automotive mechanics, and MRO service specialists with instant fastener extraction without damaging surrounding assemblies.

Best Used For:

• HVAC Equipment and Condenser Assembly: Backing out stripped, painted, or rusted 5/16-inch hex-head sheet metal screws and panel fasteners on commercial heat pumps and air handlers.
• Automotive Engine Bay Maintenance: Driving and removing corroded 5/16-inch hex hose clamp screws, bracket bolts, and trim fasteners in cramped engine compartments.
• High-Torque Production Driving and Assembly: Installing new 5/16-inch hex fasteners rapidly using impact drivers without rounding fastener heads or dropping screws during overhead work.

Key Performance & Safety Features

• Bi-Directional Extraction & Driving: Patented socket geometry grips damaged fasteners in both tightening and loosening directions, enabling both screw installation and extraction with one tool.
• Tapered Entry Flutes: Specialized internal entry profile seats effortlessly onto rounded 5/16-inch hex heads on the first try, eliminating manual file prep or hammer-on extractor steps.
• 50X Impact-Rated Durability: Heat-treated chrome-molybdenum alloy steel core withstands peak torque spikes, delivering up to 50x longer working life than standard nut drivers.
• Industrial Magnetic Retention: High-strength integrated magnet holds screws and nuts firmly seated inside the socket during awkward horizontal and overhead reaches.
• Universal 1/4" Quick-Connect Hex Shank: Power groove shank fits standard 1/4-inch impact driver quick-release chucks and conventional drill chucks without spinning out.
• High-Visibility Laser Etching: Permanent size and model markings allow rapid identification inside crowded bit cases and tool pouches.
• Corrosion-Resistant Black Oxide Coating: Protective chemical conversion finish guards against moisture, rust, motor oil, and jobsite chemical exposure.

What's Included

• (1) Crescent CAVBXM1D20 5/16-Inch x 1-7/8-Inch Bolt Biter™ Magnetic Impact Nut Driver and Extractor

Technical Specifications

Pro-Tip: When removing a stripped or rusted 5/16-inch cabinet screw, press straight inward with high axial load on your impact driver before engaging the trigger; the tapered internal flutes wedge securely into the degraded flats immediately, allowing the driver's rotational impacts to break thread corrosion without spinning out.