In industrial procurement systems, fasteners are basic standard components, yet they directly impact structural safety, equipment stability, and product lifespan.
Based on 18 years of fastener manufacturing experience, we've found that procurement problems often don't arise during the production stage, but rather stem from insufficient early selection and assessment or a lack of technical information. Below are seven common misconceptions in actual procurement.
Misconception 1: Focusing Only on Price, Ignoring Overall Usage Costs
Many procurement decisions are based solely on unit price. While this may seem effective in the short term, it easily overlooks the comprehensive costs of the product in actual use.
Low-cost fasteners often vary in material purity, machining precision, or heat treatment processes. Over long-term use, they may experience thread damage, breakage, or loosening due to vibration. Once applied to load-bearing or operational equipment scenarios, the subsequent maintenance costs and downtime losses often far exceed the initial savings on procurement costs.
A more reasonable evaluation method is to analyze procurement costs in conjunction with service life, maintenance costs, and failure risks, making decisions from an overall lifecycle perspective.
Myth 2: Mismatch Between Material Selection and Operating Environment
Fastener materials determine their stability in different environments; different materials are suitable for different working conditions. Carbon steel, stainless steel, and alloy steel differ significantly in corrosion resistance and mechanical properties.
In humid or outdoor environments, stainless steel generally performs more stably, while carbon steel has a cost advantage in dry indoor environments. If the material selection is incompatible with the operating environment, rapid corrosion is likely to occur in high humidity or salt spray environments, affecting the overall structural lifespan.
When different metals are mixed, electrochemical reactions may occur, accelerating the corrosion process. This is particularly common in marine engineering or outdoor equipment.
Myth 3: Ignoring Load and Strength Grade Requirements
The core function of fasteners is to bear structural stress, but this crucial parameter is often overlooked during procurement. Industrial fasteners are typically classified according to strength grades, with different grades corresponding to different tensile and shear strengths.
In high-vibration or high-load environments, using low-grade fasteners may lead to fatigue fracture or gradual loosening during long-term operation.
In engineering design, both static and dynamic loads must be considered simultaneously, and selection should be based on a safety factor, rather than simply relying on general specifications.
Misconception 4: Ignoring the Long-Term Impact of Environmental Conditions on Performance
In high-temperature environments, some surface treatment layers may fail, and material strength will decrease; in low-temperature environments, material toughness decreases, and the risk of fracture increases; in salt spray or chemical corrosion environments, if the protective system is insufficient, the corrosion rate will accelerate significantly.
Surface treatment processes such as galvanizing, Dacromet coating, or special anti-corrosion coatings exhibit significant differences in performance in different environments and need to be matched and selected according to the actual application conditions.
Misconception 5: Standard Parts Replace All Application Requirements
Standard fasteners are suitable for most conventional scenarios, but they often cannot meet all technical requirements in high-precision or special structural applications.
The automotive industry typically has strict standards for vibration resistance and weight control, the electronics industry focuses more on miniaturization and precision control, while heavy engineering emphasizes high strength and stability. In these applications, continuing to use general standard parts may not meet structural design requirements.
More and more companies are adopting customized solutions, developing custom designs based on drawings and performance requirements through OEM or ODM to ensure structural compatibility and long-term reliability.
Myth 6: Ignoring Supplier Capabilities and Stability
Fastener procurement is not just about product selection; it's also part of supply chain management. If a supplier lacks stable production capacity or a robust quality system, even if a single batch is qualified, batch fluctuations may occur.
Unstable delivery can also affect production plans and even cause delays to the entire production line. In industrial procurement systems, stability is often more important than single-batch cost.
When evaluating suppliers, focus should be placed on their production scale, quality control system, industry experience, and long-term supply capabilities, not just their performance at the sample stage.
Myth 7: Lack of Testing and Certification System Support
In industrial procurement, testing and certification are crucial for verifying product performance, but this step is often overlooked.
Common testing items include tensile testing, torque testing, salt spray testing, and hardness testing. These data directly reflect the product's reliability in actual use. Furthermore, ISO system certification, RoHS and REACH compliance also indicate that the product meets international market standards.
Products lacking testing and certification support exhibit higher uncertainties in practical applications, significantly increasing troubleshooting costs and risks once problems arise.
Conclusion
Although fasteners are standard parts, their selection process has distinct engineering characteristics. Avoiding the seven common pitfalls mentioned above can significantly reduce procurement risks and improve structural safety and service life.
