Simple-Lock™ Crates

An engineered, nailless alternative to the common wooden shipping crate.

Made in the USA, our Simple-Lock™ nailless wooden shipping crates are lighter, stronger, and easier to fill and assemble than your standard cleated crate. This engineered design is prized in the global market for its durability and efficiency. Crates, pallets and skids can be heat treated to ISPM 15 standards.


Chamfered 5-ply ¼” plywood provides strength and durability.
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Custom is our strength. We also offer numerous pre-sized options, including 29 Uline Sizes.
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Built to Stack

Simple-Lock™ crates range in stacking strength from 5,000 lbs to 12,000 lbs.
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Max Capacity

Simple-Lock™ crates range in weight capacity up to 3,500 lbs.
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How the Simple-Lock™ system works

Click below for a demo.

Simple-Lock™ Variations


The Simple-Fold™ comes with pre-attached walls for lightning-fast assembly.

Simple-Half Hinge™

The Simple-Half Hinge™ combines the convenience of the Simple-Fold™ with additional ease of loading.


The Simple-Lock™ is built with thicker panels for ultimate strength and durability.

The benefits of National Crate

Scroll to see some of the key features of our engineered shipping crates, or click below to learn more about our company.

Strength + Durability = Dependability.

Our panels are pre-machined to interlock for ultimate strength, so you can rest assured your valuable products are safe during shipping.

Easy Assembly. No Nails.

Our crates are assembled by sliding each component into place, then securely locking them by folding locks into machined slots.

Ship Flat, Store Flat.

Save space, our crates arrive flat, saving you costly cargo room during shipping and storage.

Load with ease. Stack with confidence.

Easily load and secure large items to crate base prior to assembly. Once assembled, our crates are designed to be easily stacked.