Product Introduction:

Set screws, also known as grub screws, locking screws or positioning screws, are indispensable precision fasteners in industrial manufacturing and equipment assembly. These 304 stainless steel hexagon socket flat-end set screws are manufactured in strict accordance with GB/T 77 national standard and DIN 913 German standard. With stable performance, reliable quality and wide applicability, they have become the preferred fasteners for mechanical transmission, precision instruments, household appliance manufacturing and other fields.

The product is made of high-quality 304 austenitic stainless steel with excellent comprehensive properties. 304 stainless steel features great corrosion resistance, rust resistance and oxidation resistance. It can be used for a long time in complex environments such as humidity, acid-base conditions and outdoor places, without rust, corrosion or aging, effectively avoiding equipment failures caused by damaged fasteners. Meanwhile, the material provides sufficient hardness, toughness and wear resistance. It remains structurally stable even under long-term vibration, repeated assembly and disassembly, and continuous stress, without thread slipping, deformation or breakage, greatly improving the service life and operational safety of the whole equipment.

In terms of structural design, these set screws adopt a standard hexagon socket structure. They can be installed and removed easily with a special hex key, featuring convenient operation and uniform stress. They allow blind-hole installation and concealed fixing, saving installation space while keeping the equipment surface neat and smooth. The flat-end design complies with standard requirements, providing uniform contact area without damaging the surface of fastened parts. It enables precise positioning and firm locking of shafts, gears, pulleys and other components, effectively preventing loosening, displacement and slipping during operation, and ensuring transmission accuracy and operational stability.

The whole production process follows a strict quality control system. The screws feature high-precision threads with full, smooth surfaces, free of burrs, broken or disordered threads. They can be screwed in smoothly with tight fit and are not easy to loosen after locking, showing strong adaptability. Every procedure, from raw material inspection and dimensional accuracy verification to hardness test and salt spray test, is strictly controlled to ensure all products fully meet national and industrial standards. A complete range of specifications is available to meet fastening requirements of different equipment and scenarios. We support in-stock supply and customized services for special specifications, quickly responding to various procurement and application needs.

With excellent quality and practicability, these set screws are widely used in machinery, electronic appliances, auto parts, medical devices, furniture hardware, fitness equipment and many other industries. They perform stably and reliably whether for micro-positioning of precision instruments, heavy-duty locking of industrial equipment, or firm fixing of daily products.

We always adhere to quality-oriented and customer-focused principles, committed to providing cost-effective and high-performance precision fasteners. With sufficient stock, fast delivery and complete after-sales service, we offer customers a one-stop fastening solution. Choosing these 304 stainless steel hexagon socket flat-end set screws means choosing stable, durable and reliable industrial fastening support, laying a solid foundation for the assembly and operation of various equipment.

Frequently Asked Questions:

1. What is a set screw?
A set screw, also known as a grub screw, is a headless fastener mainly used for locking, positioning and anti‑loosening between components such as shafts, gears and pulleys.

2. What standards do your set screws comply with?
Our set screws are manufactured in full compliance with GB/T 77 and DIN 913 standards, ensuring stable dimensions and high interchangeability.

3. What material are these set screws made of?
They are made of 304 stainless steel, featuring good rust resistance, corrosion resistance and durability, suitable for indoor, outdoor and humid environments.

4. What is the advantage of flat‑point set screws?
The flat end provides a large and even contact surface, which will not damage the workpiece surface and achieves stable, precise positioning.

5. What is the drive type?
They use hexagon socket drive, matching standard hex keys for easy installation, disassembly and stable torque.

6. Are the threads precise?
Yes, the threads are precisely processed with full shape, smooth surface, no burrs or broken teeth, ensuring smooth installation and firm locking.

7. Will they loosen easily under vibration?
Under proper installation, they provide stable locking force and are not easy to loosen under normal mechanical vibration.

8. What sizes are available?
Common sizes include M3, M4, M5, M6, M8, M10, etc. Complete specifications are in stock, and custom sizes are supported.

9. What are the main applications?
Widely used in machinery, electronics, automobiles, home appliances, furniture, fitness equipment, precision instruments and other fields.

10. Do you provide samples and bulk stock?
We offer samples for quality verification and keep sufficient stock for standard sizes, supporting fast bulk delivery.