Master Lock 1471DAT Trailer Coupler Latch Lock — 3.4 in Shackle, 9/32 in Pin, Chrome Plated

Secure your trailer with the Master Lock 1471DAT

The Master Lock 1471DAT combines durability with practical design to help protect your trailer. Crafted with a solid brass body and finished with chrome plating, this lock is built to resist daily wear while maintaining a clean, low-profile look on the coupler. A weather-tight cap seals out moisture and road spray, helping the lock stay reliable in varying conditions from rain-soaked campsites to dusty staging areas.

Key measurements are designed for broad compatibility. The lock features a 3.4 inch (3-4/10) shackle length and a 9/32 inch diameter pin, a standard size that fits a wide range of couplers. A precision 4-pin tumbler mechanism adds an extra layer of protection against casual tampering, while a K1 key blank enables straightforward replacement or rekeying alongside existing Master Lock products.

Why the 1471DAT stands out

• Protects against tow-away theft by securing the coupler latch in place, whether the trailer is connected or unattached.
• Fits UFP and surge brake couplers for broad compatibility.
• Chrome plating enhances wear resistance and helps defend against corrosion in diverse environments.
• Weather Tough seal and a weather-tight cap shield the internal mechanism from moisture.
• Solid brass construction supports long-lasting performance with a reliable routing of the pin and shackle.
• Standard 3.4 inch shackle and 9/32 inch pin diameter align with common trailer hardware.

Real-world use scenarios

Imagine leaving a trailer parked at a campsite, a busy parking lot, or a job site. The 1471DAT’s weather protection and sturdy build can help maintain security and reduce maintenance needs after exposure to rain, mud, or road grime. If you manage multiple trailers, the K1 key blank compatibility offers flexible keying options to streamline access across equipment.

What to expect during installation and use

Designed for standard coupler latches, this lock is a practical choice for everyday towing setups. Its 3.4 inch shackle length and 9/32 inch diameter pin are standard sizes that fit many latches, while the 4-pin tumbler mechanism provides a balanced mix of security and ease of use. With chrome plating and a weather-tight cap, you can expect a durable profile that ministers well to routine handling, locking, and unlocking.