LD-316 Stainless Steel Door Knob Lock Set Passage Privacy Entry | Wholesale Supplier

The LD-316 stainless steel door knob lock set provides a complete, ready-to-install hardware solution for interior and exterior doors in residential homes, apartments, offices, and hospitality properties. The knob is manufactured from stainless steel or zinc alloy and is available in silver, chrome, gold, satin nickel, and black finishes to complement any architectural style. The set supports three core functions that cover the majority 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 a keyed brass cylinder for access control. This functional versatility allows builders, contractors, and distributors to standardize on a single knob design across an entire project while specifying the correct function for each door.

At the heart of the lock is a precision brass cylinder paired with nickel silver keys, delivering smooth operation and dependable security for entry applications. The lock body and chassis are built from brass or zinc alloy for structural integrity, while the steel latch and bolt provide positive latching and reliable deadlocking that withstands years of daily use. The rose plate, available in stainless steel or zinc alloy, conceals the mounting hardware for a clean, finished appearance 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. Keyed-alike and master key options simplify key management for multi-door properties, hotels, and office buildings.

For wholesale buyers, door hardware distributors, and project contractors, the LD-316 offers extensive OEM customization. Logos can be applied to the knob and rose plate, finishes can be tailored to brand specifications, and functions and backsets can be configured to project requirements. The set meets CE and ISO 9001 quality standards and is packaged in individual color boxes complete with knobs, keys, and installation hardware for straightforward field installation. With a minimum order quantity of 100 sets and a production lead time of 15 to 25 days, this door knob lock set is a versatile, high-value addition to any locks and door hardware catalog serving new construction, renovation, and replacement markets.