What are the differences in usage between imported screws and domestic screws?

Imported screws and domestic screws coexist in the market, and due to differences in origin, production processes, quality standards, etc., they exhibit multi-dimensional differences in usage. Understanding these distinctions helps in reasonably selecting screws for different application scenarios, ensuring the normal operation and quality safety of equipment or products.

Imported screws often adhere to stricter production standards and mature manufacturing processes. Taking manufacturing powerhouses like Japan and Germany as examples, the screws produced by them feature extremely precise control over material composition during smelting. Through advanced heat treatment processes, the strength, toughness, and other properties of the screws can reach a high level and remain stable. In fields with extremely high requirements for screw performance stability, such as aerospace and high-end automobile manufacturing, imported screws rely on their stable performance to ensure fastening effectiveness even under long-term complex working conditions (e.g., high temperature, high pressure, and high vibration environments), reducing the risk of failures caused by screw failure.

In contrast, although the quality of domestic screws has improved significantly in recent years, products from some small and medium-sized enterprises may have deficiencies in production processes and quality control. Fluctuations may occur in aspects such as material purity and heat treatment uniformity of screws, resulting in inconsistent performance within the same batch. In ordinary civilian fields with low requirements for screw performance stability, such as daily furniture assembly, such performance fluctuations may have little impact. However, in high-end industrial manufacturing, unstable performance of individual screws may affect the reliability of the entire equipment.

Imported screws have advantages in precision manufacturing. Their thread profile and pitch precision are extremely high, enabling tight fit with nuts or internal threads of connected components. In the manufacturing of precision instruments and electronic equipment, high-precision imported screws can ensure accurate installation between components, avoiding loosening and misalignment caused by poor fit between screws and screw holes, thus guaranteeing the operational precision and stability of equipment. For example, imported micro screws used for fixing internal components of smartphones can precisely fit into screw holes in narrow spaces to achieve stable connection.

Among domestic screws, some mid-to-high-end products have reached internationally advanced precision levels, but mid-to-low-end products have relatively lower precision. Threads of some domestic screws may have slight deviations, which may lead to problems such as difficulty in screwing in and excessive fitting gaps in scenarios with strict installation precision requirements, affecting assembly efficiency and product quality. However, in scenarios with low precision requirements, such as building decoration and ordinary mechanical maintenance, the adaptability of domestic screws can meet basic usage needs.

Imported screws take the lead in the development of special performance, with products designed for different special environments. For instance, high-temperature resistant screws produced in the United States can maintain good mechanical properties at extremely high temperatures, making them suitable for connecting high-temperature components such as aero-engines; some anti-magnetic screws from Europe, made of special materials, can meet the strict anti-magnetic requirements in fields such as medical magnetic resonance equipment. These imported screws with special performance have irreplaceable status in specific high-end fields.

Domestic screws are also continuously expanding their range of special performance products, but there is still a certain gap with imported screws in terms of variety and performance indicators. However, in common applications of special performance, such as ordinary rust prevention and general-strength anti-loosening, domestic screws can already meet most domestic market demands and are widely used in fields such as construction and automobile parts.

In terms of cost, imported screws generally have higher prices due to factors such as brand premium, raw material procurement costs, and transportation expenses. In scenarios with large-scale use of screws, such as large construction projects and batch furniture production, using all imported screws will significantly increase costs. However, in high-end projects with extremely high requirements for screw performance and quality and relatively low cost sensitivity, the high cost of imported screws is acceptable.

Domestic screws are relatively affordable. For small and medium-sized enterprises with limited budgets, home decoration, and other scenarios, choosing domestic screws can not only meet basic usage needs but also effectively control costs. In terms of maintenance, once imported screws are damaged or their performance declines, replacement and repair costs are high due to factors such as specification standards and supply channels, and there may be issues with long supply cycles. In contrast, domestic screws have extensive supply channels, making replacement and maintenance more convenient and cost-effective.