行业组件数据 · 2026

端子螺丝

A terminal screw is a specialized fastener used to secure electrical conductors to terminal blocks in motor applications.

技术定义与适配语境
典型 端子螺丝 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 terminal screw is a precision-engineered fastener designed specifically for electrical connections in motor terminal blocks. It functions as the clamping mechanism that physically secures wire conductors to the terminal block's conductive elements, ensuring reliable electrical contact and mechanical stability. These screws are engineered to withstand vibration, thermal cycling, and electrical current while maintaining consistent torque and contact pressure.

组件规格

定义
A terminal screw is a precision-engineered fastener designed specifically for electrical connections in motor terminal blocks. It functions as the clamping mechanism that physically secures wire conductors to the terminal block's conductive elements, ensuring reliable electrical contact and mechanical stability. These screws are engineered to withstand vibration, thermal cycling, and electrical current while maintaining consistent torque and contact pressure.
工作原理
The terminal screw operates on the mechanical clamping principle. When tightened, it applies controlled pressure to compress the electrical conductor against the terminal block's contact surface, creating a low-resistance electrical path. Proper torque ensures optimal contact pressure—too little causes high resistance and overheating, while too much can damage conductors or strip threads. The screw's design often includes features like captive washers or flanged heads to distribute pressure evenly and prevent loosening from vibration.
材料
Typically made from brasscopper alloysor stainless steel (e.g.304/316 SS) with optional plating (tinnickelor silver) for enhanced conductivity and corrosion resistance. Insulation components may use nylon or PBT.
Length
6mm to 20mm
Head Type
Pan head, flanged, or countersunk
Drive Type
Slotted, Phillips, or hex socket
Thread Size
M3 to M6 common
Torque Range
0.5 Nm to 2.5 Nm
Voltage Rating
Up to 1000V AC/DC
Temperature Range
-40°C to 120°C
标准
ISO 898-1DIN 934IEC 60947-1

行业分类与别名

端子螺丝 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->Poor electrical contact or mechanical damage->Use calibrated torque tools and follow manufacturer specs
Material corrosion->Increased resistance or connection failure->Select plated or stainless-steel screws for harsh environments

工业生态与工程逻辑

0
Over-tightening causing thread damage
1
Under-tightening leading to high resistance and overheating
2
Corrosion in humid environments
3
Vibration-induced loosening

合规与检测

tolerance
Thread tolerance per ISO 965-1, dimensional accuracy within ±0.1mm
test method
Torque testing per ISO 898-1, electrical continuity testing, salt spray testing per ISO 9227 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 is the recommended torque for a terminal screw?

Torque varies by size and material but typically ranges from 0.5 Nm for M3 screws to 2.5 Nm for M6 screws. Always follow manufacturer specifications to avoid overtightening or loose connections.

Can terminal screws be reused?

Limited reuse is possible if threads and clamping surfaces are undamaged, but replacement is recommended after multiple cycles to maintain reliability, especially in high-vibration environments.

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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: 端子螺丝

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:TERMINAL_SCREW