Master Lock trailer receiver and coupler lock set 5/8" Keyed-Alike, 2-Piece with hardened pins

Master Lock 2848DAT is a two-piece keyed-alike trailer security set that locks both your 5/8" receiver and adjustable coupler latch with one convenient key.

Keep a parked or stored trailer safe with a matched receiver and coupler lock engineered for heavy-duty use. This set pairs a bent-pin receiver lock and an adjustable coupler latch lock, both built with hardened components and precision cylinders to resist cutting, prying, and unauthorized unlocking. Four identical keys are included so you can open either lock with the same key, reducing fumbling when you’re on the road.

How do these locks fit my trailer’s receiver and coupler?

The bent-pin receiver lock is sized for standard 5/8" receiver holes and stays secure in the tube thanks to its chrome-plated bent pin design. The coupler lock features an adjustable stainless shackle and case to accommodate common latch configurations. Installation is simple and tool-free for most trailers, making it practical for frequent use.

• Receiver lock fits 5/8" hitch receiver holes
• Coupler lock adjusts to common latch sizes
• Quick quarter-turn locking and unlocking
• Easy, tool-free setup for most users

What security features protect against theft or tampering?

Both pieces include hardened pins and high-strength components to increase shear resistance under force. Precision, pick-resistant locking mechanisms reduce the chance of unauthorized access, while chrome and stainless finishes add corrosion resistance for outdoor storage. The set’s matched keys simplify access without sacrificing security.

• Hardened receiver pin for higher shear strength
• Pick-resistant precision cylinders
• Chrome-plated and stainless components for durability
• Four identical keys included for convenience

How durable and weather-resistant are these locks?

The locks combine chrome plating and stainless-steel elements to stand up to road salt, rain, and routine exposure. The bent-pin design helps keep the receiver lock seated in the hitch tube, while the coupler lock’s adjustable shackle and solid case are built for regular outdoor use. Routine lubrication will extend service life in harsh environments.

• Chrome plating on receiver components
• Stainless-steel shackle on the coupler lock
• Robust construction for frequent outdoor use
• Simple maintenance—periodic lubrication recommended

How easy is it to use a keyed-alike set on the road?

A keyed-alike configuration means one key operates both locks, making hitching and unhitching faster and less fiddly. The locks lock and unlock with just a quarter turn, which is useful when you’re working in low light or juggling gear. Four identical keys are supplied so you can share spares with drivers or keep backups in multiple locations.

• One key opens both receiver and coupler locks
• Quarter-turn action for quick access
• Four keys provided for spares or multiple users
• Compact cases store easily when not in use

Who is this for? The Master Lock 2848DAT set is designed for boat owners, utility trailer operators, landscapers, and anyone who stores or leaves a trailer unattended. It suits users who want straightforward, rugged physical security for standard 5/8" receiver hitches and common coupler latches, plus the convenience of one key for both locks. If you need a durable, ready-to-use locking solution that simplifies access while deterring theft, this matched receiver and coupler kit is a practical choice.