LD-335 Hardened Steel Chain Lock Fabric Sleeve Padlock | Wholesale Supplier

The LD-335 hardened steel chain lock with fabric sleeve and padlock is a heavy-duty anti-theft solution designed to secure bicycles, motorcycles, scooters, gates, and equipment in a wide range of indoor and outdoor environments. Unlike lighter cable locks that can be severed with basic hand tools, this lock is built around a chain forged from hardened manganese steel, a material specifically chosen for its exceptional resistance to cutting, sawing, and leverage attacks. The chain is offered in link diameters of 6mm, 8mm, and 10mm, allowing buyers to select the level of security appropriate to the value of the asset being protected, from a lightweight commuter bicycle to a high-value motorcycle or a secured gate. With chain lengths available in 600mm, 800mm, 1000mm, and 1200mm, the lock accommodates everything from quick wheel-and-frame locking to securing a motorcycle around a thick parking post or anchoring a gate closed.

A defining feature of the LD-335 is its nylon and fabric protective sleeve, which fully encases the hardened steel chain to prevent direct metal-to-metal contact. This sleeve is essential for protecting delicate bicycle paintwork, motorcycle powder-coated frames, and powder-coated gate posts from scratches and abrasion that would occur when a bare chain is tensioned and moved against a surface. The sleeve is available in red, black, blue, and green, enabling brand color matching, easy fleet identification for rental and sharing operators, and a finished retail appearance that distinguishes the product from unprotected commodity chains. The link inside dimensions of 25 by 15 millimeters provide ample clearance to pass around standard parking racks, posts, and railings while keeping the chain compact enough for convenient transport.

The locking mechanism is a hardened steel padlock with a body measuring 40 to 50 millimeters, governed by a brass 5-pin tumbler cylinder that delivers smooth key operation and dependable resistance to picking and bumping. The hardened steel shackle withstands bolt cutter jaws and prying bars, while the brass cylinder resists corrosion through years of outdoor exposure. Each padlock ships with keys for convenient spare access, and the system supports keyed-different, keyed-alike, and master key configurations to simplify management for households with multiple bikes or commercial fleets with dozens of vehicles. The separation of chain and padlock also offers flexibility, as the padlock can be used independently on other hasps and latches when the chain is not needed.

For wholesale buyers, importers, and distributors, the LD-335 delivers extensive OEM and ODM flexibility. Custom logos can be embossed on the padlock body and printed on the fabric sleeve, while chain diameter, length, and sleeve color can be tailored to specific market requirements. The lock meets CE, ISO 9001, and RoHS standards and is supplied in individual color boxes or header cards with plastic hooks, packed 30 to 50 pieces per carton for efficient retail-ready distribution. With a minimum order quantity of 200 pieces, mixed orders across chain sizes and sleeve colors supported, and a production lead time of 15 to 25 days, this chain lock is a versatile, high-value addition to any security hardware catalog serving cycling, motorcycle, and outdoor recreation channels.