LD-339 Zinc Alloy Lever Handle Door Lockset | Wholesale Supplier

The LD-339 zinc alloy lever handle door lockset is a versatile, ADA-compliant door hardware solution engineered for residential homes, apartments, offices, hospitality properties, and accessibility-focused environments. The lever handle is die-cast from durable zinc alloy and is available in both curved and straight lever designs, allowing architects and designers to select the profile that best complements the interior aesthetic. The lever configuration offers ergonomic advantages over traditional knobs, making it easier to operate for children, the elderly, and individuals with limited hand mobility, which is why it is widely specified for ADA-compliant accessibility installations. The lockset supports three core functions to cover the full range of door hardware requirements: passage function for hallways and closets where latching without locking is needed, privacy function for bathrooms and bedrooms with a push-button or turn-lock mechanism, and entry function for exterior and security doors that require keyed access control.

At the core of the lockset is a precision brass 5-pin tumbler cylinder paired with nickel silver keys, delivering smooth operation and dependable security for entry applications. An internal steel spring mechanism provides positive lever return, ensuring the handle always returns to the horizontal position for consistent appearance and reliable operation. The 8mm square steel spindle transfers rotational force from the lever to the latch with minimal play, delivering crisp, responsive performance. The rose escutcheon, available in stainless steel or zinc alloy and measuring 50mm to 65mm in diameter with an 8mm to 12mm projection, conceals mounting hardware for a clean, finished look on both sides of the door. 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.

The LD-339 is offered in six popular finishes, including satin nickel, polished chrome, oil-rubbed bronze, antique brass, polished brass, and matte black, allowing hardware to be coordinated across a complete property. With a lever length of 120mm to 140mm, the handle provides a comfortable grip radius for users of all ages and abilities. For wholesale buyers, door hardware distributors, and project contractors, the lockset offers extensive OEM customization, including logo application, custom finishes, 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 sets and a production lead time of 15 to 25 days, this lever handle door lockset is a high-value addition to any locks and door hardware catalog serving new construction, renovation, accessibility, and replacement markets.