行业组件数据 · 2026

螺纹

Threads are helical ridges on cylindrical surfaces used for converting rotational motion to linear motion or for fastening components in mechanical systems.

技术定义与适配语境
典型 螺纹 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。

Threads are continuous helical ridges machined onto the surface of cylindrical components like lead screws or piston rods. They serve as mechanical interfaces that convert rotational torque into linear force through mating with corresponding internal threads (nuts) or threaded holes. In industrial applications, threads provide precise positioning, load transmission, and secure fastening in mechanical assemblies.

组件规格

定义
Threads are continuous helical ridges machined onto the surface of cylindrical components like lead screws or piston rods. They serve as mechanical interfaces that convert rotational torque into linear force through mating with corresponding internal threads (nuts) or threaded holes. In industrial applications, threads provide precise positioning, load transmission, and secure fastening in mechanical assemblies.
工作原理
Threads operate on the inclined plane principle, where the helical ridge acts as a ramp wrapped around a cylinder. When rotational force is applied, the thread's pitch (distance between adjacent ridges) determines the linear displacement per revolution. This mechanical advantage allows controlled movement and force transmission in systems like linear actuators, presses, and positioning devices.
材料
Typically manufactured from alloy steels (AISI 41404340)stainless steels (304316)or hardened tool steels. Surface treatments include zinc platingblack oxide coatingor chromium plating for corrosion resistance and wear protection.
Pitch
0.5mm to 10mm (metric), 4 to 32 TPI (imperial)
Thread Type
Metric (M), Unified (UNC/UNF), Acme, Buttress
Load Capacity
Up to 500 kN static, 200 kN dynamic
Diameter Range
M6 to M100 (metric), 1/4" to 4" (imperial)
Surface Finish
Ra 0.8μm to 3.2μm
Tolerance Class
4H/6H (internal), 4g/6g (external)
标准
ISO 68-1ISO 965DIN 13ASME B1.1

行业分类与别名

螺纹 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 thread engagement or over-torquing->Thread stripping or shearing->Use torque wrenches, follow manufacturer specifications, implement thread locking compounds
Insufficient lubrication->Increased wear and galling->Apply appropriate anti-seize compounds, establish regular maintenance schedules
Material fatigue from cyclic loading->Crack propagation leading to thread failure->Use fatigue-resistant materials, implement regular inspection protocols, design with adequate safety factors

工业生态与工程逻辑

0
Thread stripping under excessive load
1
Gallling in stainless steel threads
2
Backlash causing positioning errors
3
Corrosion in harsh environments

合规与检测

tolerance
±0.05mm for pitch diameter, ±0.1° for thread angle
test method
Thread plug gauges, optical comparators, coordinate measuring machines (CMM), torque testing

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 Acme threads and metric threads?

Acme threads have a trapezoidal profile with 29° flank angles, designed for power transmission with high efficiency and load capacity. Metric threads have triangular profiles (60° flank angles) optimized for general fastening applications.

How do I select the right thread tolerance for precision applications?

For precision positioning systems, use tolerance classes 4H/4g for minimal backlash. For general industrial applications, 6H/6g provides adequate clearance while maintaining functionality. Consider lubrication and thermal expansion in tolerance selection.

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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:THREADS