LD-340 Brass Steel Deadbolt Lock Single Double Cylinder | Wholesale Supplier

The LD-340 brass and steel deadbolt lock is a robust, high-security door hardware solution engineered for residential homes, apartments, offices, and commercial properties that demand reliable forced-entry resistance. Available in both single cylinder and double cylinder configurations, the deadbolt provides builders, contractors, and distributors with the flexibility to specify the correct security level for each door. The single cylinder version features a keyed exterior with a thumbturn on the interior, offering convenient everyday operation and safe emergency egress. The double cylinder version requires a key on both sides, delivering heightened security on doors with nearby glass panels that could otherwise be broken to reach an interior thumbturn. At the heart of the lock is a hardened steel bolt with a full 1-inch (25mm) throw, providing substantial bolt engagement into the door frame for superior resistance against prying, jimmying, and kick-in attacks.

The lock body is manufactured from solid brass or zinc alloy for structural integrity and corrosion resistance, while the hardened steel bolt is engineered to resist sawing and cutting attempts. The cylinder is available in 5-pin or 6-pin brass tumbler configurations, delivering smooth key operation and dependable anti-pick security for entry applications. With a cylinder diameter of 32mm, the deadbolt installs cleanly into standard door preparations, requiring a 54mm cross bore and a 25mm edge bore. The set accommodates standard door thicknesses from 35mm to 50mm and adjustable backsets of 60mm and 70mm, ensuring compatibility with the most common residential and commercial door preparations. Steel mounting screws provide secure, lasting attachment of the interior and exterior assemblies.

The LD-340 is offered in six popular finishes, including polished brass, satin nickel, polished chrome, oil-rubbed bronze, antique brass, and matte black, allowing hardware to be coordinated across a complete property. For wholesale buyers, door hardware distributors, and project contractors, the deadbolt offers extensive OEM customization, including logo application, custom finishes, single or double cylinder selection, keyed-alike and master key systems, and tailored packaging. The product meets CE, ISO 9001, ANSI/BHMA Grade 2, and EN 12209 standards and is packaged in individual color boxes complete with mounting hardware and keys. With a minimum order quantity of 200 pieces and a production lead time of 15 to 25 days, this brass and steel deadbolt lock is a high-value addition to any locks and door hardware catalog serving new construction, renovation, security upgrade, and replacement markets.