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PACLOCK High-Security Trailer Coupler Lock, 2-5/16in., Stainless Steel Cone Puck, Model# UCS-77S-2516

Item# 6988304
PACLOCK High-Security Trailer Coupler Lock, 2-5/16in., Stainless Steel Cone Puck, Model# UCS-77S-2516

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PACLOCK High-Security Trailer Coupler Lock, 2-5/16in., Stainless Steel Cone Puck, Model# UCS-77S-2516

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$249.99

  • Shipping: 

    Backordered: Order now to reserve yours -
    Estimated to ship 06/24/26

  • Store Pickup: 

    Not Available
  • Protects Standard 2-5/16” Trailer Couplers: This “2516” version of PACLOCK’s 77-Series is for standard 2-5/16” couplers & ball hitches. This design eliminates typical attacks with pry bars, hammers, or bolt cutters & allows for the option to lock the top of the coupler as well. Does not fit 2” couplers or those made by Bulldog®, Demco®, Airstream®, & Atwood®.
  • Easier to Use: PACLOCK’s patent-pending 2-piece system integrates the padlock into the shroud, simplifying installs, saving time in harsh weather, & preventing lost pucks.
  • Tougher Against Attacks: The patented “cone shape” puck inherently prevents frontal drilling attacks common on traditional “hockey-puck” padlocks. Combined with industry-leading 304-grade stainless steel, the padlock body is highly resistant to poorly executed drilling attempts – the material can work-harden during such attacks.
  • Durability That Lasts: The 304-grade stainless steel puck-lock resists corrosion better than even upgraded 303 & 302-grade stainless steel puck-locks used by competitors. The hasp & shroud’s zinc plating beneath the powder coat protects the steel from rust even if the powder coating is damaged.
  • Every Lock, One Key™: Use one key for all your PACLOCKs with the Universal Cylinder System™ – secure trailer doors, hitch pins, Pelican® cases, toolboxes, & more with a single key.

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  • Description

  • Key Specs

  • Reviews

  • Q & A

  • Warranty

  • Compare

Product Summary

Secure your trailer with confidence. The “UCS-77S-2516” is PACLOCK’s high-security solution for standard 2-5/16” trailer couplers – engineered from top-grade materials for strength, simplicity, and all-weather reliability. PACLOCK’s patent-pending two-piece design integrates the lock body directly into the protective shroud, eliminating the need for a separate puck. That means faster installs, fewer parts to manage, and less frustration – especially in harsh conditions like rain, mud, or snow. At the heart of the lock is PACLOCK’s patented 304-grade stainless steel cone puck – a customer favorite for its superior corrosion resistance and toughness. Unlike the 303 or 302 grades used by competitors, 304 resists cracking and deformation under hammering and prying. It can also work-harden during poorly executed drilling attempts, making frontal attacks even harder to pull off. The cone shape deflects drill bits before they can grab – a key defense feature. The shrouded 1/4in. steel housing provides added protection from cutting and blunt force attacks. A zinc-plated base layer beneath the powder coating keeps rust at bay – even if the outer finish is damaged. With PACLOCK’s Universal Cylinder System™ (UCS™) and Every Lock, One Key™ (ELOK™) capability, you can key all your PACLOCKs alike – from your coupler to trailer doors, hitch receivers, latch pins, YETI® coolers, toolboxes, and more. Innovation That Secures What Matters. PACLOCK builds locks that perform when it counts – smart designs, serious materials, and unmatched versatility for people who take security seriously.

What's Included

    (1) High Security Trailer-Coupler Lock

Features + Benefits

  • Protects Standard 2-5/16” Trailer Couplers: This “2516” version of PACLOCK’s 77-Series is for standard 2-5/16” couplers & ball hitches. This design eliminates typical attacks with pry bars, hammers, or bolt cutters & allows for the option to lock the top of the coupler as well. Does not fit 2” couplers or those made by Bulldog®, Demco®, Airstream®, & Atwood®.
  • Easier to Use: PACLOCK’s patent-pending 2-piece system integrates the padlock into the shroud, simplifying installs, saving time in harsh weather, & preventing lost pucks.
  • Tougher Against Attacks: The patented “cone shape” puck inherently prevents frontal drilling attacks common on traditional “hockey-puck” padlocks. Combined with industry-leading 304-grade stainless steel, the padlock body is highly resistant to poorly executed drilling attempts – the material can work-harden during such attacks.
  • Durability That Lasts: The 304-grade stainless steel puck-lock resists corrosion better than even upgraded 303 & 302-grade stainless steel puck-locks used by competitors. The hasp & shroud’s zinc plating beneath the powder coat protects the steel from rust even if the powder coating is damaged.
  • Every Lock, One Key™: Use one key for all your PACLOCKs with the Universal Cylinder System™ – secure trailer doors, hitch pins, Pelican® cases, toolboxes, & more with a single key.
  • Innovation That Secures What Matters: PACLOCK is redefining how people lock up their gear – with smarter designs, fewer keys, & security features that actually make a difference.

Key Specs

AttributeSpecification

item#

6988304

Brand

PACLOCK

Manufacturer's Warranty

Lifetime Limited warranty

Ship Weight

12.0 LB

Fits Ball Size

2-5/16 in
AttributeSpecification

Material

Zinc-Plated Steel

Color

Black

Product Weight

12.7400 lb

Dimensions L x W x H (in.)

9.25 x 8.75 x 8.75 in

Reviews

Questions & Answers

Questions

  1. What county is the product manufacturer in?

    1 answer

    1. This trailer coupler lock is manufactured in the United States.

      Helpful?

Warranty

Manufacturer's Warranty

Lifetime Limited warranty

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