行业组件数据 · 2026

夹紧螺丝

A precision clamping screw used in industrial power connector terminal blocks to secure electrical conductors and ensure reliable electrical connections.

技术定义与适配语境
典型 夹紧螺丝 会按材料、尺寸公差、适配关系和失效风险在 电气设备制造 中评估。

A clamping screw is a critical fastening component in industrial power connector terminal blocks, designed to mechanically secure electrical conductors (wires or busbars) within the terminal block's housing. It applies controlled compressive force to establish and maintain a low-resistance electrical connection while preventing conductor loosening due to vibration, thermal cycling, or mechanical stress. These screws are engineered for high torque transmission, corrosion resistance, and compatibility with various conductor types and sizes in industrial electrical systems.

组件规格

定义
A clamping screw is a critical fastening component in industrial power connector terminal blocks, designed to mechanically secure electrical conductors (wires or busbars) within the terminal block's housing. It applies controlled compressive force to establish and maintain a low-resistance electrical connection while preventing conductor loosening due to vibration, thermal cycling, or mechanical stress. These screws are engineered for high torque transmission, corrosion resistance, and compatibility with various conductor types and sizes in industrial electrical systems.
工作原理
The clamping screw operates on the mechanical principle of torque-to-clamp force conversion. When tightened with a calibrated tool, the screw thread engages with the terminal block's internal threading, generating axial force that presses a clamping plate or mechanism against the electrical conductor. This creates a secure mechanical grip and establishes electrical continuity by maximizing surface contact area between conductor and terminal, minimizing contact resistance and preventing arcing or overheating.
材料
Typically made from high-strength steel alloys (e.g.8.8 or 12.9 grade steel) with zinc plating or dichromate coating for corrosion resistance. Premium versions may use stainless steel (A2/A4-70/A4-80) for harsh environmentsor brass/copper alloys for enhanced electrical conductivity in critical applications.
Head Type
Hex socket (Allen), slotted, or Phillips
Thread Type
Metric (e.g., M4, M5, M6)
Torque Range
1.2-10 Nm (depending on size)
Clamping Force
500-5000 N
Conductor Range
0.5-35 mm² (wire) or up to 10 mm thickness (busbar)
Temperature Range
-40°C to +120°C
Corrosion Protection
Salt spray test ≥ 96 hours
标准
ISO 898-1DIN 912IEC 60947-7-1

行业分类与别名

夹紧螺丝 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 during installation->Loose connection leading to increased resistance, overheating, and potential fire hazard->Use calibrated torque tools and follow manufacturer specifications; implement torque verification procedures
Material fatigue from repeated thermal cycling->Screw fracture or loss of clamping force->Select materials with appropriate thermal expansion coefficients; implement preventive maintenance schedules
Corrosive environment exposure->Thread degradation and seizure, preventing maintenance->Use corrosion-resistant coatings/materials; specify environmental protection levels (IP ratings)

工业生态与工程逻辑

0
Over-torquing causing thread/strip damage
1
Under-torquing leading to loose connections and overheating
2
Corrosion in humid/chemical environments
3
Galvanic corrosion with dissimilar metals

合规与检测

tolerance
Thread tolerance: 6g per ISO 965-1; dimensional tolerance per DIN 912
test method
Torque-to-failure testing per ISO 898-1; salt spray corrosion testing per ISO 9227; electrical continuity testing per IEC 60947-7-1

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 main function of a clamping screw in a terminal block?

To securely fasten electrical conductors, ensuring stable electrical connections and preventing loosening from vibration or thermal expansion.

How do I select the right clamping screw for my application?

Consider conductor size/material, required torque, environmental conditions (corrosion, temperature), and compliance with standards like IEC 60947.

Can clamping screws be reused?

Limited reuse is possible if undamaged, but repeated tightening may reduce clamping force; follow manufacturer guidelines for critical applications.

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CNFX 是开放目录,不是交易平台或采购代理。工厂资料和表单用于帮助你准备直接沟通。

CNFX Industrial Component Index · 电气设备制造

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
本页用于结构化准备研究、RFQ 和供应商评估,不替代买方自己的供应商资质审查、标准核验和技术批准。

请求制造能力信息: 夹紧螺丝

说明目标数量、应用场景、交期和关键技术要求,用于准备 RFQ 或供应商评估。

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URN:CNFX:ME:UNIT:CLAMPING_SCREW