Hidden-Shackle Aluminum Block-Lock-Style Lock

PACLOCK is proudly Made in the USA with global components. We engineer, CNC machine, assemble, and quality test a majority of our product line at our facility in Los Angeles, California — giving us total control over quality, production speed, and product innovation.

We’re a veteran-owned and woman-owned small business built on American manufacturing and straight-up accountability.

PACLOCK is also the only manufacturer in the world producing Buy American Act (BAA) and Trade Agreement Act (TAA) compliant brass, stainless steel, and aluminum body padlocks.

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.

Our Standard Rekeyable (SR) line is ideal for customers who already have padlocks from other brands like Master Lock or American Lock. These locks are designed to be cross-keyable, allowing PACLOCK padlocks to work with your existing keys and key systems.

That means you can upgrade to PACLOCK — and start benefiting from American manufacturing, faster lead times, and better durability — without replacing all your current padlocks. It’s the easiest way to switch without the high cost or hassle.

Already using SR and thinking about switching to UCS™? Reach out — we’ll help you make the transition easy.

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

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

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.