GEARWRENCH 86182 Bolt Biter nut extractor showing 11mm and 7/16-inch dual-size markings with a 1/4-inch hex power shank.
Diagram of GEARWRENCH Bolt Biter highlighting tapered entry, dual SAE metric sizing, bi-directional grip, and torsion zone.
Angled view of GEARWRENCH Bolt Biter internal flutes engineered to grip rounded fastener heads without cutting into metal.
Retail hang-tag packaging for GEARWRENCH 86182 11mm and 7/16-inch impact-ready Bolt Biter nut extractor driver.
Using a cordless impact driver with the GEARWRENCH Bolt Biter to extract a rusted timing cover bolt on an engine block.
Technician extracting a rounded electric motor mounting bolt in an industrial maintenance shop using a Bolt Biter driver.
Mechanic removing a corroded 11mm air intake fastener in a crowded automotive engine bay with a compact Bolt Biter driver.
Extracting a stripped valve cover bolt on an engine head using the bi-directional GEARWRENCH Bolt Biter impact socket.
GEARWRENCH 86182 Bolt Biter nut extractor showing 11mm and 7/16-inch dual-size markings with a 1/4-inch hex power shank.
Diagram of GEARWRENCH Bolt Biter highlighting tapered entry, dual SAE metric sizing, bi-directional grip, and torsion zone.
Angled view of GEARWRENCH Bolt Biter internal flutes engineered to grip rounded fastener heads without cutting into metal.
Retail hang-tag packaging for GEARWRENCH 86182 11mm and 7/16-inch impact-ready Bolt Biter nut extractor driver.
Using a cordless impact driver with the GEARWRENCH Bolt Biter to extract a rusted timing cover bolt on an engine block.
Technician extracting a rounded electric motor mounting bolt in an industrial maintenance shop using a Bolt Biter driver.
Mechanic removing a corroded 11mm air intake fastener in a crowded automotive engine bay with a compact Bolt Biter driver.
Extracting a stripped valve cover bolt on an engine head using the bi-directional GEARWRENCH Bolt Biter impact socket.
GEARWRENCH

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

In stock
SKU: 86182
$7.99 USD

Description

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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.