Nilight Grade 70 Trailer Safety Chains 3/8" x 35" (2-Pack) — Forged Clevis Snap Hooks, 26,400 lb Break Strength

Nilight 2PCS 3/8" x 35" Grade 70 trailer safety chains are a heavy-duty, heat-treated pair of towing chains with forged clevis snap hooks rated for a 26,400 lb break strength (6,600 lb working load limit each).

These safety chains are built for demanding towing tasks — from boat and RV hauls to trailer and gooseneck connections. Manufactured from heat-treated alloy steel with forged snap hooks, the chains include removable zinc-plated pins with cotters for straightforward installation and replacement. They meet the typical requirements for secondary attachment during towing and add a reliable backup connection if the primary hitch separates.

How are these chains constructed to handle heavy towing?

The chains are Grade 70 alloy steel, heat-treated for higher tensile strength and durability under repeated loads. Each chain measures 3/8" in diameter and 35" long, with forged clevis snap hooks that include safety clips to reduce accidental disengagement.

• Grade 70 alloy steel links, heat-treated for toughness
• 3/8" link diameter and 35" length per chain
• Forged clevis snap hooks with integrated safety clips
• Removable zinc-plated pin and cotter for easy hook replacement

What are the strength and load ratings I need to know?

Each chain has a working load limit (WLL) of 6,600 lb and a combined break strength of 26,400 lb across the pair. These ratings give a clear margin between expected towing loads and the chain's ultimate failure point, suitable for many trailers, campers, and boat transport setups.

• Working Load Limit (per chain): 6,600 lb
• Combined break strength (pair): 26,400 lb
• Grade 70 designation indicates high-strength alloy steel
• Forged hardware reduces deformation under stress

How should I install and use these safety chains correctly?

Use two chains and cross them underneath the trailer tongue so they cradle the coupler if it disconnects, preventing the trailer from dropping to the road. Hook each chain to the vehicle’s hitch receiver loops, and secure the clevis snap hooks with their safety clips and cotter pins; replace pins easily via the zinc-plated removable pin system.

• Attach two chains, crossing under the coupler for a cradle effect
• Clip forged snap hooks to receiver safety loops and close safety clips
• Check and tighten cotter pins; replace worn pins using zinc-plated removal system
• Inspect chains regularly for wear, deformation, or corrosion

Can these chains be used with gooseneck couplers and boats?

Yes — the heavy Grade 70 construction and clevis hooks make these chains compatible with trailers, RVs, boats, and gooseneck couplers where a strong secondary connection is required. They provide added safety during transport and meet common towing setups that require chain backup attachments.

• Suitable for trailers, RVs, boats, and gooseneck couplers
• Forged hooks accommodate standard hitch loop sizes
• Durable finish and pin system help simplify maintenance
• Works as a required secondary attachment for many towing regulations

Who is this for: The Nilight 2PCS Grade 70 3/8" x 35" trailer safety chains are intended for vehicle owners, boaters, RVers, and professional haulers who need a rugged secondary connection for towing. They suit anyone who wants a dependable, easy-to-install safety chain set with clear strength ratings and serviceable hardware for regular towing use.