Puck lock

When evaluating puck locks, prioritize solid A380 aluminum alloy or hardened steel bodies to resist drilling and sawing. The most critical feature is the hidden shackle design, which eliminates points for bolt cutter attacks. Ensure the lock uses a 6-pin or 7-pin brass cylinder to increase pick resistance, and look for electrophoretic coating or chrome plating to ensure a salt spray test rating of at least 96 hours for corrosion resistance.

For the US market, ensure the products meet ASTM F883 standards for padlock strength and security. For European markets, EN 12320 certification is preferred. If the locks are intended for the automotive or logistics industry, verify if the supplier follows ISO 9001 quality management systems to ensure batch consistency and reliability in high-vibration environments.

B2B buyers should specify their needs between Keyed Alike (KA), where one key opens multiple locks (ideal for fleet management), and Keyed Different (KD) for individual security. For enterprise-level operations, inquire about Master Key Systems (MK), which allow supervisors to access all locks while employees have restricted access. Always confirm if the supplier provides restricted keyway profiles to prevent unauthorized key duplication.

Puck locks are primarily used for sliding doors on delivery vans, storage containers, and vending machines. Buyers must ensure the supplier provides heavy-duty steel hasps that are compatible with the lock body. The installation usually requires carriage bolts or welding, so verify that the mounting hole patterns align with standard industry footprints (e.g., the universal 6-hole or 3-hole configurations).

Request a Material Test Report (MTR) to verify the grade of steel or alloy used. Before full payment, hire a third-party inspection service to perform a hardness test (Rockwell scale) and a functional fit test with the hasps. Using Made-in-China.com's Secured Trading Service can provide an extra layer of payment protection until the quality is verified.

Focus on the Total Cost of Ownership (TCO) rather than just the unit price. Negotiate for spare cylinder kits or a 2-year replacement warranty on internal mechanisms. If ordering over 1,000 units, ask for custom logo laser engraving and specialized packaging to be included in the price to enhance your brand value.

Puck locks are dense and heavy; therefore, Sea Freight (LCL or FCL) is the most economical method. Ensure the supplier uses reinforced double-wall corrugated cartons and palletization to prevent box collapse during transit. Check the specific HS Code (typically 8301.10) for your country to calculate accurate import duties and avoid customs delays.

Always verify the supplier's Business License and Export Qualification on the platform. Conduct a video factory audit to see the production line and testing equipment in real-time. Avoid direct wire transfers to private accounts; instead, use official corporate accounts verified by the sourcing platform to ensure legal recourse in case of disputes.