Elsjoy 5/8" Extra-Long Trailer Hitch Lock for 3" Receiver — 4.5" Span, Anti-Rattle O-Rings

Elsjoy’s 5/8" extra-long trailer hitch lock is a heavy-duty locking hitch pin with a 4-1/2" active span designed to secure 3" receivers (and works with 2.5"/2" adapters) while reducing rattle.

Whether you tow a trailer, camper, boat or carry accessories on a truck, the right hitch lock keeps your gear where it belongs. This Elsjoy locking hitch pin pairs hardened-steel construction with a tubular lock cylinder, a dust cap and anti-rattle O-rings to provide a compact, easy-to-use theft deterrent. It installs without tools and includes two tubular keys plus an R-style spring clip for added retention.

How durable is the Elsjoy hitch lock against cutting and tampering?

The lock uses reinforced hardened steel and a double-layer anti-drill, anti-pick tubular cylinder to resist common attack methods. A rubber dust cap shields the keyway from moisture and grit, preserving function in outdoor conditions.

• Hardened steel shaft resists saws and shear tools.
• Double-layer anti-drill cylinder reduces drilling risk.
• Dustproof rubber cap prevents corrosion of lock internals.
• Tubular keys are harder to pick than standard flat keys.

Will this fit my hitch and stop annoying rattles on the road?

The pin is 5/8" in diameter with a maximum active length of 4-1/2", intended for 3" receivers and compatible with 2.5" or 2" adapters. Elastomer O-rings compress around the receiver tube to dampen movement, cutting vibration and noise while keeping the hitch assembly stable.

• 5/8" diameter fits standard hitch pin holes.
• 4-1/2" active span suited for 3" receivers.
• Included O-rings reduce play and road noise.
• Works with 2.5"/2" adapters—verify receiver depth first.

How do I install and lock the Elsjoy hitch pin?

Installation is tool-free: slide the pin through the receiver and insert the R-style spring clip into the pin hole for basic retention, then push the lock into place until it clicks. The push-lock design is quick to use and comes with two unique tubular keys in case one is lost.

• Slide pin through hitch and accessory shank.
• Insert R-type spring clip into the pin hole for added backup.
• Push-lock mechanism secures with a click; rotate and remove key to lock.
• Two unique tubular keys included; not keyed alike.

What maintenance does the locking pin need for long life?

Minimal upkeep keeps the Elsjoy hitch lock functioning for years: wipe the shaft and O-rings occasionally, keep the dust cap over the keyway, and lubricate the cylinder annually with a graphite or silicone product. If you tow in salty environments, rinse and dry the pin after exposure to prevent corrosion.

• Wipe clean and inspect O-rings before trips.
• Keep the rubber dust cap in place over the keyway.
• Use graphite or silicone lubricant for the lock cylinder yearly.
• Rinse freshwater after saltwater exposure and dry fully.

Who is this for: The Elsjoy extra long 5/8" trailer hitch lock is made for boat owners, RV and trailer users, landscapers, and truck drivers who need a secure, low-noise locking solution for 3" receivers. It’s ideal if you want a rugged, easy-to-install pin that reduces rattling and provides clear theft deterrence without tools or complicated hardware. Always confirm your receiver dimensions before ordering to ensure a proper fit.