Master Lock Co 1481DAT Trailer Coupler Pin Lock 5/8 in

Product Description

The MASTER LOCK CO 1481DAT is a dual-function trailer coupler and receiver pin lock designed to secure towing connections in a single unit. The straight barbell-style pin engages both the receiver and coupler simultaneously, eliminating the need for two separate locks. A stainless steel sleeve protects the pin body against corrosion and wear. An all-weather cap shields the keyway from rain, dirt, and debris, keeping the cylinder functional in demanding outdoor conditions. The 5/8-inch pin diameter fits standard receiver and coupler applications. This lock is keyed alike, allowing the same key to operate both locking functions.

This lock is suited for trailer towing applications in commercial fleet maintenance, agriculture, construction, and general towing use. The coupler latch lock secures the trailer coupler in the locked position, preventing unauthorized hitch separation. The 7/8-inch coupler latch width covers standard coupler latch dimensions. Both the receiver pin and coupler latch functions are served by the same keyed-alike cylinder, which simplifies key management for operators running multiple trailers or tow vehicles.

Key Features

• 5/8-inch barbell-style receiver pin and coupler lock combined in one unit
• Stainless steel sleeve resists corrosion for extended outdoor service life
• All-weather keyway cap protects cylinder from rain, mud, and debris
• Keyed-alike lock secures both receiver pin and coupler latch with one key
• 7/8-inch coupler latch width fits standard trailer coupler latches
• Compatible with Master Lock key blank K1BOX or Ilco blank M1 TV 320-952

Compatibility

Compatible with 5/8-inch trailer receiver pin applications and standard coupler latch widths up to 7/8 inch. Uses Master Lock key blank K1BOX or Ilco blank M1 TV 320-952.

Installation Notes

Installation requires no special tools. Insert the barbell pin through the receiver tube and coupler latch, then engage the lock cylinder. Ensure the tow vehicle is stationary and the trailer is unhitched from any load before servicing or replacing the lock. Apply the all-weather cap over the keyway when the lock is not in active use to extend cylinder life.

Technical Specifications

• Pin Diameter: 5/8 inches
• Coupler Latch Width: 7/8 inches
• Sleeve Material: Stainless Steel
• Weight: 6.16 pounds
• Package Quantity: 4 per unit of measure
• Compatible Key Blanks: Master Lock K1BOX, Ilco M1 TV 320-952

Standard Information

• Brand: MASTER LOCK CO
• Manufacturer Part Number: 1481DAT