Comprehensive Guide to Set Screws (Grub Screws) | Taiyuanfeng High-Quality Fastening Solutions

Introduction

In mechanical assembly and precision engineering, small fasteners often play a decisive role. The set screw (also known as grub screw or blind screw) is one such humble yet critical component. As a professional fastener manufacturer, Taiyuanfeng is dedicated to providing customers with high-precision, high-reliability set screws to solve the challenges of rotating-part fixation across various industries.

What is a Set Screw?

A set screw is a headless threaded fastener designed to be fully driven into a workpiece. It fixes the relative position between a shaft and a hub, gear, or other part by exerting end pressure or embedding into the mating surface to prevent loosening. Common drive types include hex socket and slotted, with hex socket set screws being the most popular because they allow higher torque application and reduce cam-out.

Taiyuanfeng produces set screws covering multiple point styles: cup point, flat point, cone point, and dog point, to meet different clamping force and surface protection requirements.

Materials & Surface Finishes

The performance of a set screw largely depends on material selection. Taiyuanfeng offers the following standard materials:

• Carbon Steel (Grade 45H / Grade 10.9) – High strength for general industrial fastening.

• Stainless Steel (SUS304 / SUS316) – Excellent corrosion resistance for outdoor, chemical, and food equipment.

• Alloy Steel (SCM435 / Grade 12.9) – Ultra-high strength for heavy-duty applications such as aerospace and racing.

Surface finish options include black oxide, zinc plated, nickel plated, and Dacromet to improve rust protection and wear resistance. All products undergo hardness tests and dimensional tolerance verification to meet international standards like DIN 916 and ISO 4029.

Main Application Areas

Set screws are widely used in the following equipment:

1. Motors & Gearboxes – Fixing gears, synchronous pulleys, and sprockets onto shafts.

2. Molds & Fixtures – Adjusting stop blocks or locking insert positions.

3. Hardware Tools – Axial positioning inside handles and knobs.

4. Automotive Parts – Locking fasteners in steering systems and brake mechanisms.

5. Automation Equipment – Backlash-free locking of sensor brackets and couplings.

Taiyuanfeng set screws have been validated by many industrial customers, maintaining stable clamping force even under vibration. We also offer non-standard lengths, special point styles, and custom marking services to help optimize your assembly process.

Why Choose Taiyuanfeng Set Screws?

• Precision Threads – High-accuracy thread rolling process with 6g/6H thread tolerance ensures full interchangeability.

• Case-hardened Points – Local heat treatment for cup and cone points improves bite and holding power.

• 100% Testing – Every batch undergoes go/no-go gauge and hardness spot checks; material test reports are available.

• Customization Support – We offer non-standard lengths, special point styles, alternative materials, various surface finishes, and laser marking of logos or specifications to meet your unique design requirements.

• Expert Support – Our engineering team recommends the optimal point style and tightening torque for your application.

At Taiyuanfeng, we believe “small screw, big quality.” Whether you need standard fasteners or fully customized solutions, we deliver reliable products and transparent service.

Get More Information