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Squire Chain: Through Hardened

Protect your high-value assets with the Squire Through Hardened security chain collection. As one of the UK’s oldest and most trusted lockmakers, Squire is renowned for delivering serious, heavy-duty physical security. This range features chains constructed from steel that is hardened all the way through, delivering exceptional resistance against cutting, sawing, and cropping attacks.

Whether you need commercial-grade protection or portable security on the go, this collection offers a tailored solution:

Squire Stronghold: Heavy-duty hardened alloy steel chains designed for high-risk applications, including perimeter gates, substations, and commercial vehicles.
Squire Stronglock & Toughlok: Lighter, highly portable options that offer excellent value and robust security, making them ideal for securing bicycles, motorbikes, and everyday equipment.

Finished with protective fabric sleeving to prevent scratches to your paintwork, these chains offer the ultimate peace of mind. Safeguard your property with Squire's legendary British security heritage.

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Squire

Squire (formally Henry Squire & Sons Ltd) is one of the UK’s oldest lockmakers — a heritage brand best known for serious padlocks and chain security, especially in the motorcycle, commercial, and site-security world. Squire’s own history traces the business back to 1780, when William Squire began making locks in Willenhall (the Black Country’s lockmaking capital). They even supplied locks to the British Army during the Napoleonic Wars, which is a wildly specific flex that basically translates to: “we’ve been thinking about forced entry since muskets were a performance upgrade.”

Operationally, the trading entity behind the brand is Henry Squire & Sons Limited.

What Squire is known for

Squire’s modern identity is anchored in high-security padlocks and matching hardened chains / accessories, with the flagship line being Stronghold®. Their own “About” page calls out products like the Stronghold SS100cs as an ultra-high-security production padlock (Squire describe it as the world’s strongest production padlock — not subtle, but neither is a 1kg lump of hardened steel).

A good example of how the brand positions itself in real-world standards:

The Squire SS65CS Stronghold is independently listed by Sold Secure with CEN Grade 6 and a Powered Cycle Gold rating, alongside features like hardened components and weather resistance.

Through Hardened

Our selection of through-hardened security chains offers maximum protection for high-value assets, featuring steel that is hardened all the way through to deliver exceptional resistance against cutting, drilling, and sawing attacks. Designed for robust physical security, many of these heavy-duty chains utilise square-link profiles specifically engineered to defeat bolt cutters and hacksaws. To prevent damage to your paintwork, chrome, or bicycle frames, each chain is wrapped in a durable fabric or PVC protective sleeve. Ideal for securing perimeter gates, machinery, motorcycles, and commercial properties, these high-security chains provide reliable, long-lasting defence in the most demanding environments. View all Through Hardened products