1.Customer Demand: A client approached us with a customization requirement for a small swivel lobster clasp, with the core functional focus on the rotating ring at the bottom. The key technical requirement was to process a notch on the rotating ring that could enable smooth passage of 0.3mm webbing while ensuring reliable fixation without slippage after assembly. Initially, the client proposed a 2mm notch design, which was later revised to 0.5mm during the cooperation process, requiring multiple sample iterations to finalize the optimal technical solution.

2. Our Solution: Upon receiving the customization demand, our technical team (composed of hardware designers and mold makers with 20 years of industry experience) first conducted in-depth demand communication with the client to clarify the application scenario of the hook buckle and the specific performance indicators for webbing fixation. In response to the frequent adjustments of the notch size, we adopted a "rapid sample iteration + technical verification" mode to ensure efficient response and accurate matching of the client's needs.For the initial 2mm notch design, our team completed sample production quickly and conducted webbing assembly tests with 0.3mm webbing. The test results showed that the notch size was excessively large, leading to obvious slippage of the webbing, which failed to meet the client's anti-slip requirements. After systematically feeding back the test data and technical optimization suggestions to the client, we adjusted the design to a 0.5mm notch based on the client's revised demand. During the second sample production, we optimized the mold processing parameters and strictly controlled the dimensional tolerance to ensure the precision of the notch. However, subsequent tests indicated that slight slippage still occurred when the 0.5mm notch-assembled webbing was subjected to normal tensile force.To solve this core problem, our technical team conducted a comprehensive analysis of the 0.3mm webbing's thickness, hardness, and stress distribution during actual use. Based on the analysis results, we proposed a 0.3mm notch design that could form an interference fit with the 0.3mm webbing to achieve reliable fixation. In the third sample production process, we used high-precision stamping equipment and controlled the notch processing tolerance to ±0.02mm, ensuring the consistency and accuracy of the notch size across batches. Meanwhile, we performed precision polishing on the notch edge to eliminate burrs and avoid damage to the webbing during assembly and use.

3. Delivery Results: The 0.3mm notch sample produced in the third iteration was verified by the client. The test results showed that the 0.3mm webbing could pass through the notch smoothly, and no slippage occurred even under the designed tensile force, fully meeting the client's functional requirements. The client highly recognized our professional technical capabilities, efficient response speed, and patient service attitude, and subsequently placed a batch order for the customized hook buckle. Up to now, the batch products have been delivered smoothly, and the client has no quality complaints regarding the webbing fit performance of the products.

4. Core Advantages: This case fully demonstrates our team's professional capabilities in flexible response to customized demands. We have the patience and ability to conduct multiple sample iterations according to the client's dynamic demand adjustments, and possess the technical strength to accurately analyze and solve key technical problems in the customization process. Our advanced high-precision processing equipment and strict quality control system ensure that the final products can perfectly match the client's refined functional requirements, providing reliable customized hardware solutions for clients with high-precision functional demands.