行业组件数据 · 2026

紧固件(螺栓/螺母)

Threaded fasteners used to securely join components in bracing systems through mechanical clamping force.

技术定义与适配语境
典型 紧固件(螺栓/螺母) 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

Bolts and nuts are standardized threaded fasteners that create secure, adjustable, and removable connections in structural bracing systems. Bolts feature external threads that engage with the internal threads of nuts, generating clamping force through torque application to resist shear, tension, and vibration loads while maintaining alignment and structural integrity.

组件规格

定义
Bolts and nuts are standardized threaded fasteners that create secure, adjustable, and removable connections in structural bracing systems. Bolts feature external threads that engage with the internal threads of nuts, generating clamping force through torque application to resist shear, tension, and vibration loads while maintaining alignment and structural integrity.
工作原理
Mechanical fastening through threaded engagement creates clamping force when torque is applied to the nut or bolt head. This force compresses joined materials between the bolt head and nut, generating friction that resists relative movement while the threads provide mechanical interlocking against axial forces.
材料
Carbon steel (Grade 4.6-12.9)alloy steelstainless steel (A2/A4)titaniumbrassor specialized coatings (zincgalvanizedDacromet) for corrosion resistance.
Head Type
Hex, socket, flange
Thread Type
Metric (ISO), UNC/UNF
Thread Pitch
Standard, fine
Strength Grade
4.6, 8.8, 10.9, 12.9
Surface Treatment
Zinc-plated, hot-dip galvanized, phosphate
Torque Specification
Based on diameter and grade
标准
ISO 898ISO 4014ISO 4032DIN 931DIN 934ASME B18.2.1

行业分类与别名

紧固件(螺栓/螺母) 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Incorrect torque application->Joint loosening or bolt fracture->Use calibrated torque wrenches, follow manufacturer specifications, implement torque verification procedures
Corrosive environment exposure->Reduced cross-sectional area, strength degradation->Select appropriate corrosion-resistant materials, apply protective coatings, implement regular inspection schedules
Vibration-induced fatigue->Crack initiation and propagation->Use locking nuts, apply thread-locking compounds, implement vibration-damping washers, regular inspection

工业生态与工程逻辑

0
Over-torquing causing thread stripping
1
Under-torquing leading to joint loosening
2
Galvanic corrosion in dissimilar metals
3
Fatigue failure from vibration
4
Improper thread engagement

合规与检测

tolerance
Thread pitch tolerance per ISO 965, dimensional tolerances per ISO 4759, mechanical properties per ISO 898
test method
Tensile testing (ISO 898-1), hardness testing, torque-tension testing, salt spray testing for corrosion resistance

制造该组件的工厂

来自 CNFX 组件能力表的相关制造商资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What determines the strength grade of bolts?

The strength grade (e.g., 8.8, 10.9) indicates tensile strength and yield strength ratios. The first number represents 1/100 of the minimum tensile strength in MPa, while the second number indicates the yield strength ratio.

How is proper torque determined for bolt installation?

Torque is calculated based on bolt diameter, strength grade, material friction coefficients, and joint requirements using standardized formulas or manufacturer specifications to achieve optimal clamping force without over-tightening.

What maintenance is required for fasteners in bracing systems?

Regular inspection for corrosion, loosening, or deformation; periodic re-torquing if specified; replacement if wear exceeds tolerance; and lubrication if required by the application environment.

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CNFX Industrial Component Index · 机械和设备制造

数据基础

CNFX 制造商资料、技术分类、公开产品信息和持续合理性检查。

初步技术归类
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URN:CNFX:ME:UNIT:FASTENERS_BOLTS_NUTS_