Purpose Axle Chains, Large Hook 5/16"x 4' (Pair)
The BT-513 is a heavy-duty 5/16" x 4' Purpose Axle Chain set engineered specifically for the commercial towing, recovery, and auto-hauling industry. Sold as a pair, these chains are primary tools for securing vehicle front or rear axles during transport or winching operations.
Core Specifications & Hardware Setup
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Chain Grade & Size: 5/16-inch Grade 70 (Transport/High-Test) chain links, designed to provide high strength-to-weight ratios for vehicle recovery applications.
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Length: 4 feet per chain leg, optimized for reach around axles, lower control arms, or frame members without excess slack.
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Hooks & End Fittings:
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Features a Large Hook (often a 15" J-Hook or large forged axle hook) designed to fit directly over heavy-duty car and truck rear axles (including Super Duty axle housings).
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Opposite end includes grab hooks or attachment fittings to allow length adjustment and secure anchoring to wrecker bed D-rings or underlift crossbars.
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Packaging: Sold as a pair (2 chain assemblies per set).
Key Applications & Industry Usage
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Large hook opening wraps around common semi-tractor axles with room to spare
Short chain prevents bulk chain from getting in the way
Large hook opening on frame-end of chain clips to any frame – even double frame trucks. Extra foundry hooks allow you to shorten the chain as needed – no wrapping necessary.
This chain allows you to keep air bags up and avoid crawling around in the dirt under a tractor being towed backwards
