行业组件数据 · 2026

紧固件

A fastener is a hardware device that mechanically joins or affixes two or more objects together in a linkage mechanism.

技术定义与适配语境
典型 紧固件 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。

In industrial engineering, a fastener is a critical component used in linkage mechanisms to create non-permanent joints between machine parts, allowing for assembly, disassembly, and maintenance. It transmits forces and maintains alignment while permitting controlled movement or adjustment. Fasteners in linkage systems must withstand dynamic loads, vibration, and cyclic stresses while maintaining precise positioning of connected elements.

组件规格

定义
In industrial engineering, a fastener is a critical component used in linkage mechanisms to create non-permanent joints between machine parts, allowing for assembly, disassembly, and maintenance. It transmits forces and maintains alignment while permitting controlled movement or adjustment. Fasteners in linkage systems must withstand dynamic loads, vibration, and cyclic stresses while maintaining precise positioning of connected elements.
工作原理
Fasteners work by applying clamping force through mechanical advantage (thread engagement, wedge action, or interference fit) to create friction and/or positive locking between components. In linkage mechanisms, they maintain joint integrity while allowing rotational or translational movement at connection points, distributing loads across mating surfaces to prevent separation or misalignment during operation.
材料
Typically carbon steel (Grade 25or 8)alloy steel (41404340)stainless steel (304316)or titanium alloys. Surface treatments include zinc platinghot-dip galvanizingphosphate coatingor Dacromet for corrosion resistance. High-strength applications may use heat-treated alloys with tensile strengths from 400 MPa to over 1200 MPa.
Drive Type
Hex socket, Phillips, slotted, or Torx
Head Style
Hex, socket, flange, or countersunk
Thread Type
Metric (ISO) or Imperial (UNC/UNF)
Strength Grade
8.8, 10.9, or 12.9 for metric; Grade 2, 5, or 8 for imperial
Temperature Range
-50°C to +300°C (varies by material)
Corrosion Resistance
Salt spray test hours (e.g., 500+ hours)
Torque Specification
10-300 Nm (depending on size and grade)
标准
ISO 898-1ISO 4014ISO 4017DIN 931DIN 933ASME B18.2.1

行业分类与别名

紧固件 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

Insufficient preload torque during assembly->Joint separation under operational loads leading to mechanism misalignment->Implement calibrated torque wrenches with verification procedures, use torque-angle method for critical joints, and conduct regular torque audits
Vibration from reciprocating linkage motion->Progressive loosening over time causing play and impact damage->Apply thread-locking compounds, use self-locking fasteners, install locking washers, and schedule preventive maintenance inspections
Corrosive environment without proper protection->Thread degradation and reduced cross-sectional area leading to tensile failure->Select corrosion-resistant materials (stainless steel, coated alloys), apply protective coatings, and implement environmental controls

工业生态与工程逻辑

0
Vibration-induced loosening
1
Over-torquing causing thread stripping
2
Under-torquing leading to joint separation
3
Galvanic corrosion in dissimilar metals
4
Fatigue failure from cyclic loading
5
Improper alignment causing bending stresses

合规与检测

tolerance
Thread tolerance 6g for external threads, 6H for internal threads per ISO 965-1; length tolerance ±0.5mm for standard fasteners
test method
Tensile testing per ISO 898-1, salt spray corrosion testing per ISO 9227, vibration testing per DIN 25201-4, torque-tension testing per ISO 16047

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 is the difference between Grade 8.8 and 10.9 fasteners?

Grade 8.8 fasteners have a minimum tensile strength of 800 MPa and yield strength of 640 MPa, while Grade 10.9 offers 1000 MPa tensile and 900 MPa yield strength. Grade 10.9 provides approximately 25% higher load capacity but requires more precise torque control and has lower corrosion resistance unless specially coated.

How do I prevent fastener loosening in vibrating linkage mechanisms?

Use locking methods such as nylon-insert lock nuts, prevailing torque nuts, thread-locking adhesives (Loctite), double-nut systems, or mechanical locking washers. Proper preload torque and regular maintenance inspections are also critical for vibration-prone applications.

What factors determine fastener size selection for linkage joints?

Consider maximum tensile and shear loads, safety factors (typically 2-4 for dynamic applications), material compatibility, corrosion environment, required disassembly frequency, space constraints, and cost. Engineering calculations should verify shear strength, thread engagement length, and clamp load adequacy.

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CNFX Industrial Component Index · 机械和设备制造

数据基础

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初步技术归类
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URN:CNFX:ME:UNIT:FASTENER