Complete GEARWRENCH 83911 7-Piece SAE Bolt Biter impact extraction socket set, featuring five sockets and two adapters organized on a black storage rail.
Detailed diagram highlighting the key features of the GEARWRENCH Bolt Biter extraction socket, including a bi-directional design, tapered flutes, high-visibility markings, and a hexagonal base for versatile tool compatibility.
Close-up view of the 1/4-inch and 3/8-inch heavy-duty impact drive adapters included in the GEARWRENCH 83911 Bolt Biter damaged fastener extraction socket set.
Detailed macro view of a 1/2-inch GEARWRENCH Bolt Biter impact extraction socket showcasing its internal tapered flutes, black oxide finish, and clear laser-etched sizing.
Front view of the retail packaging for the GEARWRENCH 83911 7-Piece SAE Rescue Extraction Socket Set, displaying the tools and listing their primary damaged fastener removal benefits.
Close-up of a mechanic using a GEARWRENCH Bolt Biter extraction socket attached to a hand ratchet to successfully loosen a severely rusted and rounded bolt on industrial machinery.
Informational graphic indicating the premium Chrome Molybdenum Cr-Mo alloy steel construction of GEARWRENCH Bolt Biter sockets, ensuring maximum strength and long-lasting durability.
Graphic illustrating the high-visibility laser-etched size markings on GEARWRENCH Bolt Biter extraction sockets, allowing for quick and easy tool identification on the jobsite.
Illustration demonstrating the capabilities of the GEARWRENCH Bolt Biter impact extraction socket set to easily grip and remove both heavily rusted and completely rounded-off fasteners.
Top-down diagram showcasing the unique GEARWRENCH Bolt Biting internal flute design firmly gripping a rounded fastener to prevent slipping during tightening or extraction.
Graphic illustration highlighting the versatile dual-drive design of the GEARWRENCH Bolt Biter impact extraction socket set, indicating compatibility with both hand ratchets and power impact tools for damaged fastener removal.
Close-up of a mechanic using a GEARWRENCH Bolt Biter impact extraction socket with a standard hand ratchet to securely grip and remove a rusted and stripped bolt from a heavy-duty industrial surface.
Action shot demonstrating a GEARWRENCH Bolt Biter extraction socket attached to a power impact driver, successfully loosening a severely rusted and damaged automotive suspension fastener.
GEARWRENCH® Bolt Biter™ - removed rusted and rounded fasteners promotional how to video
How to remove a rounded rusty bolt - GEARWRENCH® Bolt Biter™ - (84782, 84783 & 84784) promotional how to video
Complete GEARWRENCH 83911 7-Piece SAE Bolt Biter impact extraction socket set, featuring five sockets and two adapters organized on a black storage rail.
Detailed diagram highlighting the key features of the GEARWRENCH Bolt Biter extraction socket, including a bi-directional design, tapered flutes, high-visibility markings, and a hexagonal base for versatile tool compatibility.
Close-up view of the 1/4-inch and 3/8-inch heavy-duty impact drive adapters included in the GEARWRENCH 83911 Bolt Biter damaged fastener extraction socket set.
Detailed macro view of a 1/2-inch GEARWRENCH Bolt Biter impact extraction socket showcasing its internal tapered flutes, black oxide finish, and clear laser-etched sizing.
Front view of the retail packaging for the GEARWRENCH 83911 7-Piece SAE Rescue Extraction Socket Set, displaying the tools and listing their primary damaged fastener removal benefits.
Close-up of a mechanic using a GEARWRENCH Bolt Biter extraction socket attached to a hand ratchet to successfully loosen a severely rusted and rounded bolt on industrial machinery.
Informational graphic indicating the premium Chrome Molybdenum Cr-Mo alloy steel construction of GEARWRENCH Bolt Biter sockets, ensuring maximum strength and long-lasting durability.
Graphic illustrating the high-visibility laser-etched size markings on GEARWRENCH Bolt Biter extraction sockets, allowing for quick and easy tool identification on the jobsite.
Illustration demonstrating the capabilities of the GEARWRENCH Bolt Biter impact extraction socket set to easily grip and remove both heavily rusted and completely rounded-off fasteners.
Top-down diagram showcasing the unique GEARWRENCH Bolt Biting internal flute design firmly gripping a rounded fastener to prevent slipping during tightening or extraction.
Graphic illustration highlighting the versatile dual-drive design of the GEARWRENCH Bolt Biter impact extraction socket set, indicating compatibility with both hand ratchets and power impact tools for damaged fastener removal.
Close-up of a mechanic using a GEARWRENCH Bolt Biter impact extraction socket with a standard hand ratchet to securely grip and remove a rusted and stripped bolt from a heavy-duty industrial surface.
Action shot demonstrating a GEARWRENCH Bolt Biter extraction socket attached to a power impact driver, successfully loosening a severely rusted and damaged automotive suspension fastener.
GEARWRENCH® Bolt Biter™ - removed rusted and rounded fasteners promotional how to video
How to remove a rounded rusty bolt - GEARWRENCH® Bolt Biter™ - (84782, 84783 & 84784) promotional how to video
GEARWRENCH

GearWrench Extraction Socket Set 83911 1/4 and 3/8 Inch Drive 7 Piece Bolt Biter Remover (Cr-Mo Alloy Steel Bi-Directional Hardware Disassembly)

In stock
SKU: 83911
$15.99 USD
$16.55 USD Sale $15.99 USD

Description

Gearwrench Forge Ahead Logo Logout

GearWrench 83911 7-Piece SAE Bolt Biter™ Impact Extraction Socket Set

The GearWrench 83911 7-piece SAE Bolt Biter™ impact extraction socket set removes, loosens, and tightens severely stripped, rounded, rusted, and seized fasteners ranging from 1/4-inch to 1/2-inch across automotive chassis and industrial machinery. Forged from high-tensile chrome molybdenum (Cr-Mo) alloy steel with an industrial black oxide protective coating, these impact-rated extractors deliver up to 10 times longer service life and 5 times greater torque output than conventional spiral extractors. Outfitted with a patented bi-directional tapered fluted profile, a dual square drive and external hex base, two drive adapters, and a compact organizer rail, it equips automotive mechanics, fleet technicians, and fabricators with reliable gripping force that extracts damaged hardware without destroying reusable threads.

Best Used For:

  • Corroded Automotive Chassis and Exhaust Disassembly: Extracting rusted manifold studs, rounded suspension bolts, and seized brake caliper hardware using high-torque impact wrenches.
  • Industrial Machinery and Plant Maintenance: Backing out stripped hex-head bolts and distorted cap screws where conventional 6-point sockets slip.
  • Emergency Fastener Tightening and Re-Installation: Driving damaged or rounded bolts back in to secure temporary assemblies when replacement fasteners are unavailable.

Key Performance & Safety Features

  • Bi-Directional Flute Architecture: Patented tapered flutes bite into damaged fastener heads in both clockwise and counter-clockwise directions to allow removal and re-tightening.
  • Tapered Entry Geometry: Fluted entry mouth seats effortlessly onto severely rounded hex heads without requiring hammer blows to engage.
  • Impact-Grade Chrome Molybdenum Steel: Drop-forged Cr-Mo alloy construction withstands intense cyclic impact vibrations and extreme breakout torque.
  • Dual-Drive Hex Base and Square Tang: Operates via standard 1/4-inch and 3/8-inch square drive power tools or externally with hand ratchets, wrenches, and pliers.
  • Minus-Size Fastener Engagement: Precision-engineered socket tolerances grip heavily corroded undersized fasteners that standard extraction sockets slip over.
  • High-Visibility Laser Etchings: Permanent laser-marked size callouts on a black oxide surface ensure instant identification in low-light workspaces.

What's Included

  • (5) SAE Bolt Biter™ Extraction Sockets (Sizes: 1/4", 5/16", 3/8", 7/16", 1/2")
  • (2) Impact Drive Adapters (1/4" Square Drive and 3/8" Square Drive)
  • (1) Snap-On Storage Socket Rail

Technical Specifications

Manufacturer Brand GearWrench (Apex Tool Group)
Model Part Number 83911
Product Line Family Bolt Biter™ Extraction Series
Total Set Piece Count 7-Piece Set (5 Sockets, 2 Adapters)
Measurement Standard SAE (Fractional Imperial Standard)
Socket Size Range 1/4 in., 5/16 in., 3/8 in., 7/16 in., 1/2 in.
Square Drive Interface Sizes 0.250 in. (1/4 in.) & 0.375 in. (3/8 in.)
Material Composition Drop-Forged Chrome Molybdenum (Cr-Mo) Alloy Steel
Protective Surface Finish Corrosion-Resistant Industrial Black Oxide
Drive Profile Configuration Internal Square Drive with External Hex Base
Impact Rating Standard Heavy-Duty Pneumatic & Cordless Impact Rated
Total Set Net Weight 0.762 lbs (12.19 oz / 345.64 g)
Universal Product Code (UPC) 099575839115
Suitable for material type Rusted Steel Bolts, Stripped Hex Screws, & Rounded Studs

Pro-Tip: On severely rusted fasteners, apply steady forward pressure on your impact gun while engaging low RPM; the tapered flutes will seat onto the undamaged shoulder of the bolt, breaking it free without wedging the socket onto the removed hardware.