Tie Down Engineering Class 4 Safety Chain, 5/16 in. X 40-3/4 in., Sold in Pairs with S-Hooks

This Tie Down Engineering safety chain is built for towing and boat trailer applications that call for a Class 4 rated backup connection. Sold as a pair, each chain measures 5/16 in. In diameter with an overall length of 40-3/4 in., and the set includes two S-hooks for quick, secure attachment between the trailer and the towing vehicle or between the boat and the bow stand on the trailer. The chain is constructed of zinc-plated steel, giving it a durable, corrosion-resistant finish suited to outdoor and marine-adjacent use. With a Class 4 rating, this pair supports a combined load capacity of 7000 pounds, making it appropriate for larger trailers and heavier towing loads where a single lighter-duty chain would not be sufficient. The included S-hooks are designed for straightforward hookup without additional hardware, so the chains can be swapped onto a trailer as a direct replacement set. Whether used as the required safety backup for a tow vehicle connection or as a bow safety chain securing a boat to its trailer stand, this Tie Down Engineering Class 4 chain (part number 81204) provides a strong, reliable link. Each unit in the pair weighs 6.76 pounds.

Specifications

• Brand: Tie Down Engineering
• Manufacturer Part Number: 81204
• Class: Class 4
• Chain Diameter: 5/16 in.
• Overall Length: 40-3/4 in.
• Material: Zinc-plated steel
• Finish/Color: Zinc plated (silver)
• Load Capacity: 7000 pounds
• Attachment Type: S-hooks
• Included Components: 2 safety chains with 2 S-hooks
• Weight: 6.76 pounds

Fitment

This Class 4, 5/16 in. Safety chain is suited to trailers requiring a Class 4 rated safety chain connection, including use as a bow safety chain securing a boat to the bow stand on the trailer.

Frequently Asked Questions

What is the load capacity of the Tie Down Engineering 81204 safety chain? The 81204 chain carries a Class 4 rating with a load capacity of 7000 pounds, making it suited to heavier trailer and towing applications.

How long is part number 81204? Part number 81204 has an overall length of 40-3/4 in. And a chain diameter of 5/16 in.

Does this chain come with hooks already attached? Yes, the 81204 pair includes two S-hooks for attaching the chains between the trailer and the tow vehicle or boat stand.

How many chains are included in this listing? This is sold as a pair, giving you 2 safety chains with 2 S-hooks total, part number 81204.

What material is the 81204 safety chain made from? The chain is made of zinc-plated steel, which resists corrosion during outdoor and towing use.

Can this chain be used as a bow safety chain? Yes, this Class 4, 5/16 in. Chain can be used to secure a boat to the bow stand on the trailer, in addition to standard tow vehicle safety chain use.

What class rating does part 81204 have? Part 81204 is Class 4 rated, the heaviest-duty classification in this chain lineup.

How much does the 81204 chain weigh? The Tie Down Engineering 81204 chain weighs 6.76 pounds.

Is this a direct replacement part? Yes, the 81204 Class 4 safety chain is designed as a replacement set for worn or damaged trailer safety chains.

What is the difference between the 81204 chain and other chains in the same lineup? The 81204 is the Class 4, 5/16 in. Chain with a 40-3/4 in. Overall length; other part numbers in the same lineup use different classes and shorter lengths for lighter-duty use.