JB/T 58651.10-1999

This standard is primarily used by fastener manufacturers and quality inspection departments to evaluate the quality grade of pin products. It helps producers control product quality through clear grading principles and inspection methods, and provides a basis for users to select appropriate grade pins. It is important in mechanical manufacturing and assembly to ensure the reliability and interchangeability of pin products.

该标准主要用于紧固件制造企业和质量检验部门，对销类产品进行质量等级评定。通过明确的分等原则和检验方法，帮助生产方控制产品质量，并为用户选择合适等级的销产品提供依据。它在机械制造和装配领域具有重要意义，确保销类产品的可靠性和互换性。

This standard specifies the principles and methods for quality grading of pin products manufactured according to national and industry standards, adopting three grades: superior, first-grade, and qualified. It applies to batches of single specification products accepted per GB/T 90. The standard details inspection items, sampling plans, defect grades, and weighted values, and provides grading standards and inspection methods. By referencing multiple related standards, it ensures effective control of key indicators such as dimensions, threads, and hardness, providing a unified quality evaluation basis for production and use.

本标准规定了按国家标准及行业标准生产的销类产品的质量分等原则和方法，采用优等品、一等品、合格品三级分等。适用于按GB/T 90接收的单一规格产品批。标准详细列出了抽查项目、抽样方案、缺陷等级及加权值，并给出了分等标准和检验方法。通过引用多个相关标准，确保销产品的尺寸、螺纹、硬度等关键指标得到有效控制，为生产和使用提供统一的质量评价依据。