GearWrench Nut Extractor 86182 11mm 7/16 Inch Bolt Biter Driver (1/4 Hex Shank Bi-Directional Impact Torsion Cr-Mo Damaged Fastener Removal)

GEARWRENCH 86182 11mm / 7/16" Bolt Biter Nut Extractor and Driver The GEARWRENCH 86182 11mm (7/16-inch) Bolt Biter nut extractor and driver removes severely rusted bolts, extracts rounded nuts, installs replacement fasteners, and loosens seized automotive hardware. Forged from high-strength chrome-molybdenum (Cr-Mo) alloy steel with an integrated high-torque impact torsion zone, this 0.08-lb bi-directional extraction socket grips damaged fastener heads rather than cutting into them, delivering up to 50 times longer service life than traditional spiral-fluted extractors. Outfitted with a tapered entry collar for instant seating without hammering, dual-dimension broaching that fits both 11mm metric and 7/16-inch SAE fasteners, and a corrosion-resistant black oxide finish, it provides automotive technicians, industrial mechanics, and maintenance professionals with reliable extraction and re-torquing capability in demanding impact gun applications. Best Used For: Corroded Automotive and Exhaust Bolt Extraction: Removing seized 11mm and 7/16-inch manifold fasteners, suspension bolts, and rusted brake line brackets without shearing the fastener head. Stripped and Rounded Nut Removal: Gripping compromised and rounded hex nuts securely using tapered internal fluting without requiring manual hammer seating. Re-Torquing and Re-Installing Specialized Fasteners: Driving and tightening reused or hard-to-source hardware back into position with bi-directional rotational grip. Key Performance & Safety Features Bi-Directional Gripping Geometry: Extracts stripped fasteners in reverse and drives them forward for full installation without slipping or jamming. Non-Cutting Flute Architecture: Grips damaged fastener walls without cutting into the metal, preventing socket tooth breakdown and yielding 50x longer durability. Dual SAE & Metric Sizing Compatibility: Precision internal profile fits both 11mm and 7/16-inch fastener heads to eliminate tool swapping across mixed hardware. High-Torque Torsion Zone: Engineered shaft flex zone absorbs sudden rotational impact peaks from cordless impact drivers to prevent shank shearing. Drop-Forged Chrome Molybdenum Steel: Industrial Cr-Mo alloy construction withstands intense cyclic vibrational stress and heavy torque loads. Tapered Self-Centering Entry: Slips easily onto deformed, rusted, or paint-covered fastener heads without requiring mallets or punches. What's Included (1) GEARWRENCH 86182 11mm (7/16") Bolt Biter Nut Extractor & Driver (1/4" Hex Power Shank) Technical Specifications Manufacturer Apex Tool Group / GEARWRENCH Model / Part Number 86182 Product Line Bolt Biter™ Extraction Series Drive Shank Interface 0.250 inches (1/4 in / 6.35 mm) Quick-Change Hex Power Shank Dual Fastener Sizing 11.0 mm Metric & 0.4375 inches (7/16 in) SAE Material Metallurgy Drop-Forged Chrome-Molybdenum Alloy Steel (Cr-Mo) Drive Directionality Bi-Directional (Forward Tightening & Reverse Extraction) Protective Surface Coating Industrial Corrosion-Resistant Black Oxide Finish Overall Tool Length 2.56 inches (65.0 mm) Overall Tool Width & Height 0.43 inches (10.9 mm) x 0.43 inches (10.9 mm) Industry Manufacturing Standards Meets or Exceeds ANSI & ASME Performance Specifications Tool Net Weight 0.077 lbs (1.23 oz / 35.0 g) Warranty Coverage Full Manufacturer Lifetime Warranty UPC Barcode 099575861826 Pro-Tip: Press the Bolt Biter firmly onto the rounded fastener head and apply steady, low-speed throttle on your 1/4-inch impact driver; allowing the tapered internal flutes to wedge fully into the fastener corners before ramping up torque prevents cam-out and ensures instant extraction.