A Deadbolt Lock is a mechanical locking solution that secures a door using a solid metal bolt extending deeply into the door frame. Unlike spring latch systems, the bolt operates independently through a key or thumb turn, improving resistance against forced entry. Deadbolt locks are widely applied in residential and commercial doors where higher security levels are required. Their simple internal structure reduces wear risks while maintaining stable locking performance over long-term use, making them a reliable choice for consistent door protection.
Engineered for durability, security, and consistent performance across residential and commercial applications.
Flexible options available for wholesale, project supply, and OEM/ODM requirements.
Square Deadbolt Lock DDLK021-A and DDLK021-B offer a clean geometric appearance combined with reliable mechanical security for modern door systems. The square rosette structure delivers a sharp and contemporary visual profile, making it suitable for both residential and light commercial environments. Equipped with a solid brass cylinder and precision-engineered internal components, this deadbolt lock ensures stable locking performance and consistent operation over long-term use. The adjustable backset allows flexible installation across standard door preparations, while compatibility with common door thickness ranges simplifies project integration. Available in both single cylinder and double cylinder configurations, it supports different access control requirements, providing a balanced combination of security, adaptability, and aesthetic consistency for bulk order and project applications.
| Product Model | DDLK021-A | DDLK021-B |
| Type | Single Cylinder Deadbolt Lock | Double CylinderDeadbolt Lock |
| Cylinder + Keys | Brass | |
| Rosette | Zinc Alloy | |
| Square Rosette | 65mm × 65mm | |
| Door Thickness | 1-3/8" to 1-3/4" (35mm to 45mm) | |
| Backset | Adjustable 2-3/8"(60mm),2-3/4"(70mm) | |
| Finish | SSS, AB, AC, PB, US10B | |
| Mechanism Option | Tubular Type | |
| MOQ | 100PCS | |
| Package | 1pc / poly bag, white box / color inner box, standard export carton | |
| Sample Time | 5-7 working days | |
| Production Lead Time | 30-35 days normally | |
| Shipping Port | Jiangmen, China / Shenzhen, China | |
Round Deadbolt Lock DDLK022 series offers a practical security solution for residential and light commercial doors, combining stable mechanical performance with a clean circular rosette design. The lockset is available in both single cylinder and double cylinder configurations, allowing flexible selection based on security requirements and door environments. With a solid brass cylinder and precision-engineered internal structure, it ensures reliable locking performance and smooth operation over long-term use. The 70mm zinc alloy rosette provides a balanced visual proportion while maintaining structural strength, making it suitable for modern door hardware systems. Its adjustable backset and compatibility with standard door thickness ranges allow easy installation across various door types. Multiple surface finishes support consistent matching with different architectural styles and project specifications.
| Product Model | DDLK022-A | DDLK022-B |
| Type | Single Cylinder Deadbolt Lock | Double Cylinder Deadbolt Lock |
| Cylinder + Keys | Brass | |
| Rosette | Zinc Alloy | |
| Rosette Diameter | 70mm | |
| Door Thickness | 1-3/8" to 1-3/4" (35mm to 45mm) | |
| Backset | Adjustable 2-3/8"(60mm),2-3/4"(70mm) | |
| Finish | SSS, AB, AC, PB, US10B | |
| Mechanism Option | Tubular Type | |
| MOQ | 100PCS | |
| Package | 1pc / poly bag, white box / color inner box, standard export carton | |
| Sample Time | 5-7 working days | |
| Production Lead Time | 30-35 days normally | |
| Shipping Port | Jiangmen, China / Shenzhen, China | |
Clear status visibility and secure access control come together in this Occupancy Indicator Deadbolt, a practical locking solution for high-traffic restroom and privacy-focused spaces. Engineered for commercial environments, this mortise-style deadbolt integrates an internal thumb turn with an external indicator that clearly displays “In Use” or “Vacant,” helping reduce interruptions and improve user flow. An emergency release function is included for safety compliance, allowing authorized access when needed without compromising everyday privacy. Fully aligned with ADA A117.1 accessibility requirements, this deadbolt offers a reliable solution for facilities that prioritize both safety standards and user convenience in commercial applications.
| Product Model | DDLK028 |
| Material | Zinc Alloy / Brass |
| Door Thickness | 1-3/8" to 1-3/4"(35mm to 45mm) |
| Backset | Adjustable 2-3/8"(60mm),2-3/4"(70mm) |
| Includes | Emergency release key |
| ADA Compliance | Meets ADA requirements-A117.1 Accessibility Code |
| MOQ | 100PCS |
| Package | 1pc / poly bag, white box / color inner box, standard export carton |
| Sample Time | 5-7 working days |
| Production Lead Time | 30-35 days normally |
| Shipping Port | Jiangmen, China / Shenzhen, China |
Deadbolt locks are widely used on residential entry doors, apartment units, office entrances, and light commercial properties where reliable physical security is required. They are commonly installed as a primary locking solution or paired with handle locks for dual protection. In housing projects, deadbolt locks help improve access control and tenant safety, while in commercial settings they provide dependable security for offices, storage rooms, and service areas.
See real product details, structure, and usage scenarios through our visual demonstrations.
Please contact us by email or phone with your detailed requirements. Our team will reply within 24 hours. In addition to door hardware, D&D also delivers complete door opening solutions.
We accept T/T, D/P, Western Union, and L/C as payment methods.
We are a manufacturer with over 18 years of experience and are an SGS-audited factory specializing in architectural hardware.
Yes. Up to three samples can be provided free of charge. Customers are required to arrange a courier account for freight collection.
We mainly use SUS304 and SUS316 stainless steel, with SUS201 available for selected product applications.
All our products are backed by a 10-year mechanical warranty.
Yes. We operate a complete quality control system, with strict inspection and monitoring at every stage of mass production following standardized procedures.
Yes. We provide both OEM and ODM solutions and have extensive experience collaborating with well-known global brands.
Our products carry CE and UL certifications, and all designs are developed in accordance with international standards such as EN/CE, UL, ANSI, and BHMA.