行业组件数据 · 2026

紧定螺钉

Set screws are threaded fasteners used to secure rotating components like gears, pulleys, and collars onto shafts by applying pressure against the shaft surface.

技术定义与适配语境
典型 紧定螺钉 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。

Set screws are headless fasteners with internal threading designed to secure one object within or against another, typically by exerting compressive force through a pointed or flat tip that contacts the shaft surface. They are commonly used in locking devices to prevent relative motion between assembled parts, ensuring precise positioning and torque transmission in mechanical systems.

组件规格

定义
Set screws are headless fasteners with internal threading designed to secure one object within or against another, typically by exerting compressive force through a pointed or flat tip that contacts the shaft surface. They are commonly used in locking devices to prevent relative motion between assembled parts, ensuring precise positioning and torque transmission in mechanical systems.
工作原理
Set screws work by creating frictional force between the screw tip and the shaft surface when tightened. The screw is threaded into a tapped hole in the outer component (e.g., collar or hub), and its tip presses directly against the shaft, preventing slippage through mechanical interference rather than clamping force from a nut.
材料
Typically made from alloy steel (e.g.Grade 8.810.9or 12.9)stainless steel (A2/A4)or brass. Common coatings include zinc platingblack oxideor dichromate for corrosion resistance.
Hardness
HRC 28-45 depending on grade
Tip Types
Cup point, flat point, cone point, oval point, half dog point
Drive Types
Hex socket (Allen), slotted, Phillips, Torx
Thread Type
Metric (M3-M20) or Imperial (UNC/UNF)
Torque Specifications
Varies by size and material (e.g., M6 steel: 10-12 Nm)
标准
ISO 4026ISO 4027ISO 4028ISO 4029DIN 913DIN 914DIN 915DIN 916

行业分类与别名

紧定螺钉 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 torque during installation->Screw loosens, causing component slippage on shaft->Use calibrated torque wrenches and follow manufacturer specifications
Vibration in operational environment->Fatigue failure or loosening over time->Apply thread-locking adhesives and implement regular maintenance checks

工业生态与工程逻辑

0
Over-tightening can damage shafts
1
Improper tip selection reduces holding power
2
Corrosion in harsh environments
3
Thread stripping in soft materials

合规与检测

tolerance
Thread tolerance: 6g per ISO 965-1; length tolerance: ±0.5mm for standard sizes
test method
Torque-to-failure testing per ISO 898-1; hardness testing per ISO 6508; 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 difference between cup point and flat point set screws?

Cup point screws have a concave tip that digs into the shaft surface for maximum holding power, while flat point screws distribute pressure over a larger area, minimizing shaft damage and allowing repositioning.

How do I prevent set screws from loosening under vibration?

Use thread-locking compounds (e.g., Loctite), apply proper torque, select cup point tips for better grip, or use double set screws in staggered configurations.

我可以直接联系工厂吗?

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 · 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
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: 紧定螺钉

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:SET_SCREWS