mechanical combination lock|TSA Approved Luggage Locks for Secure Travel & Gym Use

A mechanical combination lock is a non-electronic security device that uses a rotating dial and a set of internal tumblers to control access—relying on a pre-set numeric combination (typically 3 to 4 digits) instead of a physical key. As a classic, reliable product of Shanghai Kuntu Industrial Co., Ltd., a BSCI-certified manufacturer with over 20 years of experience in lock engineering, this mechanical combination lock is engineered to balance durability, simplicity, and tamper resistance—catering to global clients such as homeowners, businesses, schools, and storage facilities that prefer low-maintenance, key-free security. Kuntu’s mechanical combination lock leverages the company’s expertise in precision mechanical design, ensuring it operates smoothly even after years of use. The application scenarios for Kuntu’s mechanical combination lock are diverse, spanning residential, commercial, and institutional use. For a homeowner in the United States, the lock is installed on a backyard storage shed to secure gardening tools and outdoor equipment. The homeowner sets a 3-digit combination that all family members know, eliminating the need to carry or hide a key. The lock’s weather-resistant finish (zinc plating with a powder coat) protects it from rain and humidity, and it has operated reliably for over 5 years without maintenance. In a commercial setting, a gym in Canada uses Kuntu’s mechanical combination locks on locker doors. Each locker is assigned a unique 4-digit combination, which members set themselves when they rent the locker. The gym appreciates that the locks require no batteries or power, reducing maintenance costs, and that members cannot lose keys (a common issue with keyed locks). For a school in Australia, the locks are used on classroom storage cabinets that hold teaching materials and small equipment. The school administration sets a master combination for staff access, and individual teachers can reset the combination if needed—ensuring that only authorized personnel can access the cabinets. Kuntu’s mechanical combination lock is designed for durability and simplicity. The lock body is constructed from high-grade zinc alloy (resistant to corrosion and impact), with a rotating dial made from hardened steel (resistant to scratches and wear). The internal mechanism uses precision-machined tumblers and a brass cam, ensuring smooth dial rotation and consistent combination alignment. The lock features a “changeable combination” design—users can easily reset the combination without tools, following simple instructions. The shackle (for padlock models) is made from hardened steel, with a double-locking mechanism that prevents it from being cut with bolt cutters (up to 8mm-thick shackles for heavy-duty models). For door-mounted models, the lock is compatible with standard door prep (2-3/8” or 2-3/4” backset), making installation easy for contractors. Compliance with global security standards is ensured for Kuntu’s mechanical combination lock. The product meets standards such as the United States’ ANSI/BHMA A156.30 Grade 2, Canada’s CSA B440, and the European Union’s EN 1300. Kuntu’s foreign trade team offers regional adaptations, such as adjusting the shackle length (for padlock models) or adding a key override option (for emergency access). For clients seeking customization, such as engraving the lock body with a brand logo or creating a custom combination range (e.g., 5-digit combinations), Kuntu’s R&D team can provide tailored solutions. As pricing varies based on lock type (padlock, door lock) and shackle thickness, please contact our foreign trade team for a personalized quote and product samples.