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5-Pack UCS™ Cylinders (Zero-Bitted)

5-Pack UCS™ Cylinders (Zero-Bitted)

“UCS-Cyl-KZ5” Series

Product Information

The Universal Cylinder System by PACLOCK allows padlock owners to replace the cylinders in their UCS padlocks in minutes. Because all UCS padlocks are precisely machined in the U.S., PACLOCK can reproduce locks with extremely low tolerances, allowing for all different kinds of locks that use the same interchangeable cylinder. Whether you own a UCS-82A trailer lock, a Puck-Link, or a Job Box Lock, rekeying your padlocks is as easy as unscrewing a screw and replacing the old cylinder with your new cylinder. Increase your lockability with a five-pack of PACLOCK’s UCS cylinders – the first step to re-keying your padlocks. With a pack of UCS cylinders in your UCS padlocks, you’ll only need one key to open them all. All PACLOCK padlocks come standard with 6-pin cylinder technology. Typical retail padlocks only have 4-pins, leaving them relatively easy to pick and making duplicate key combinations a problem. Our standard 6-pin cylinder far exceeds the U.S. military lock requirements of a 5-pin cylinder. The insides of our locks are built using brass, aluminum, and stainless-steel components – keeping them secure from not just unwanted guests, but harsh weather as well.

The Universal Cylinder System by PACLOCK allows padlock owners to replace the cylinders in their UCS padlocks in minutes. Because all UCS padlocks are precisely machined in the U.S., PACLOCK can reproduce locks with extremely low tolerances, allowing for all different kinds of locks that use the same interchangeable cylinder. Whether you own a UCS-82A trailer lock, a Puck-Link, or a Job Box Lock, rekeying your padlocks is as easy as unscrewing a screw and replacing the old cylinder with your new cylinder. Increase your lockability with a five-pack of PACLOCK’s UCS cylinders – the first step to re-keying your padlocks. With a pack of UCS cylinders in your UCS padlocks, you’ll only need one key to open them all. All PACLOCK padlocks come standard with 6-pin cylinder technology. Typical retail padlocks only have 4-pins, leaving them relatively easy to pick and making duplicate key combinations a problem. Our standard 6-pin cylinder far exceeds the U.S. military lock requirements of a 5-pin cylinder. The insides of our locks are built using brass, aluminum, and stainless-steel components – keeping them secure from not just unwanted guests, but harsh weather as well.

Product Information

Available Colors: N/A
Lock Body Material: N/A
Available Shackle Materials: N/A
Made in China
Cylinder Manufacturer(s): PACLOCK®
Cylinder Type: Universal Cylinder System
Available Keyway(s): P0
Shackle Spread: N/A

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FAQ's

Getting your locks keyed together is easy with PACLOCK. One of the easier ways to accomplish this is by purchasing from Amazon using the “U-Pick!” method. To do this, order locks off of Amazon and select the “U-Pick!” keying option (available on Amazon.com). Then, type your key number into the custom field and you’re all set! Repeat this process for as many locks as you want keyed together and they’ll all come with the same keys. If the “U-Pick!” Option is not available in your country, you’ll be able to purchase locks without any cylinders, purchase the cylinders separately yourself. To learn how to install the cylinders or pin new cylinders, be sure to watch our short “How-To’s.”
Getting more keys for your PACLOCK’s is easy! Most hardware stores have a key-cutting machine that can duplicate your current UCS key, but if they don’t, you can get more keys via Amazon or by calling or emailing us!

UCS-Cyl-KZ5 Videos

FAQ's

PACLOCK’s Universal Cylinder System™ (UCS™) gives you total flexibility — choose Keyed Alike (all your locks open with the same key) or Keyed Different (each lock has its own unique key). With our U-PICK!™ option, you can even choose your own key number when ordering keyed alike, or let PACLOCK assign one for you — either way, you get total control and simplicity.

UCS™ works across a wide range of lock types — from padlocks to trailer locks to job box locks — all using the same key system. It’s the best choice for new PACLOCK customers who want simplicity, scalability, and control, with over 20,000+ unique key changes, a high-performance 6-pin cylinder with stainless steel pins, and tight ±0.002” tolerances that help reduce shimming risk and resist picking and bumping.

Standard Rekeyable (SR) is PACLOCK’s original rekeyable system, designed for simpler PACLOCK-only setups. It uses a 6-pin cylinder with 8 pin heights and stainless steel pins, with a key range of 93001–95802 (up to 4,000 key changes). For expanded systems or new purchases, UCS™ is the recommended path. If you’re currently using SR and want to transition, contact PACLOCK to upgrade your system.

Yes — PACLOCK supports a wide range of third-party cylinder technologies, so you can integrate our padlocks into your existing key system. We manufacture padlocks designed to accept commercial formats including Master Lock® M1, Key-in-Knob/Lever (KIK/KIL), SFIC (5-, 6-, and 7-pin), FSIC, and LFIC systems (Medeco®, Sargent®, Corbin Russwin®, ASSA®, Yale®, and more).

These cylinder technologies are reflected directly in the part number. For example, an 81-Series trailer door lock configured for a Master Lock® M1 cylinder would be M1-81A.

PACLOCK does not supply commercial cylinders — padlocks ship less cylinder, ready to be installed with your existing cores and keys.

Yes — PACLOCK provides master keying and grand master keying solutions for customers who need layered access control. These systems are built to order, so reach out and we’ll walk you through what’s possible for your organization. Lead times may vary depending on system complexity.

You’ve got options:

  1. Buy from your local locksmith
    Many locksmiths stock PACLOCK or can order our products for you — supporting local professionals helps you get fast, personalized service.
  2. If you are a locksmith or professional, contact your preferred distributor and demand PACLOCK.
    PACLOCK is available through top security distributors across the country.
  3. Shop on Amazon
    Our full range of consumer and commercial-grade padlocks is available with Prime shipping.
  4. Order directly from PACLOCK.com
    Browse all models, customize your keying, and get direct-from-the-factory options.
  5. Need a custom setup, government quote, or commercial account?
    Contact us directly and we’ll route you to the right team — no pressure, no upsells.

Whether you’re placing an order, setting up a key system, or just need help choosing a lock, our team is ready to assist. Use the contact form below, email us at sales@paclock.com, or call 661-294-3707. You’ll hear back from a real person — not a robot.

UCS-Cyl-KZ5 Videos

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