JB/T 58651.9-1999
Fastener Product Quality Grading - Washers
紧固件产品质量分等 垫圈
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 名词、术语及计算公式 → 4 抽查项目、抽样方案、缺陷等级及加权值 → 5 分等标准 → 6 检验方法 Foreword → 1 Scope → 2 Normative References → 3 Terms, Definitions and Calculation Formulas → 4 Inspection Items, Sampling Plan, Defect Grades and Weighted Values → 5 Grading Standards → 6 Inspection Methods
Scope
This standard specifies the principles and methods for quality grading of washer-type products manufactured according to national standards and industry standards. It may also be used as a reference for quality grading of washer-type products manufactured according to other standards. This standard adopts three grades: superior product, first-class product, and qualified product. This standard applies to single-specification product lots accepted according to GB/T 90. The dimensional symbols used in this standard are consistent with current washer standards. The washer-type products covered by this standard include flat washers, spring washers, elastic washers, lock washers, and retaining washers.
本标准规定了按国家标准及行业标准生产的垫圈类产品质量分等的原则和方法。按其他标准生产的垫圈类产品进行质量分等时亦可参照使用。 本标准采用三级分等，即优等品、一等品、合格品。 本标准适用于按GB/T 90 接收了的单一规格产品批。 本标准中使用的尺寸代号，均与现行垫圈标准一致。 本标准适用的垫圈类产品包括平垫圈、弹簧垫圈、弹性垫圈、锁紧垫圈和止动垫圈。
Normative References
Keywords
Application Summary AI generated
Fastener manufacturers and quality inspection departments use this standard to grade the quality of washer-type products. It establishes three quality levels (superior, first-class, and qualified) and sampling inspection procedures to ensure compliance with national or industry standards. This standard provides a unified grading basis for quality control of washers, helping to improve product consistency and market competitiveness.
紧固件生产企业和质量检验部门使用本标准，对垫圈类产品进行质量等级评定。通过三级分等（优等品、一等品、合格品）和抽样检验，确保产品符合国家标准或行业标准。该标准为垫圈产品的质量控制提供了统一的分等依据，有助于提升产品一致性和市场竞争力。
AI Summary AI generated
This standard specifies the principles and methods for quality grading of washer-type products, applicable to flat washers, spring washers, elastic washers, lock washers, and retaining washers manufactured according to national or industry standards. It adopts three quality grades: superior, first-class, and qualified, based on sampling inspection and unit defect score. The standard also defines inspection items, defect grades, weighted values, and test methods, providing a unified technical basis for quality control of washers.
本标准规定了垫圈类产品的质量分等原则和方法，适用于按国家标准或行业标准生产的平垫圈、弹簧垫圈、弹性垫圈、锁紧垫圈和止动垫圈。采用优等品、一等品、合格品三级分等，基于抽样检验和单位缺陷分进行评定。标准还明确了抽查项目、缺陷等级、加权值及检验方法，为垫圈产品的质量控制提供了统一的技术依据。
Key Sentences extracted from text
本标准规定了按国家标准及行业标准生产的垫圈类产品质量分等的原则和方法。
本标准采用三级分等，即优等品、一等品、合格品。
本标准适用于按GB/T 90 接收了的单一规格产品批。
本标准适用的垫圈类产品包括平垫圈、弹簧垫圈、弹性垫圈、锁紧垫圈和止动垫圈。
垫圈产品的质量分等标准按表2 规定。
This standard specifies the principles and methods for quality grading of washer-type products manufactured according to national standards and industry standards.
This standard adopts three grades: superior product, first-class product, and qualified product.
This standard applies to single-specification product lots accepted according to GB/T 90.
The washer-type products covered by this standard include flat washers, spring washers, elastic washers, lock washers, and retaining washers.
The quality grading standards for washer products are specified in Table 2.
Standard Timeline
Changes from replaced version:
- 对原标准进行了编辑性的修改
- 主要技术内容没有变化
- Editorial modifications were made to the original standard
- The main technical content remained unchanged