Technical Documents - Fastener Standards & Knowledge | Zhuhai Jiali Hardware

Detailed differences between 304, 316 and 2205 stainless steel screws, definition of A2-70, A4-80 strength grades, material selection rules and anti-rust skills for different working environments.

This article explains the core heat treatment process for high-strength fasteners, including principles, procedures and its effect on improving mechanical properties.

This article comprehensively analyzes the latest developments in global fastener technical standards in 2026, providing an in-depth comparison of technical requirements, test methods, and application scenarios for DIN, ISO, and GB standard systems, along with detailed selection guidelines and practical application cases to help engineers accurately understand and apply various fastener standards.

Screw loosening is a common problem. This article introduces several effective locking methods to improve connection reliability.

Leveraging its core advantages of pressure distribution, anti-loosening, and corrosion resistance, the I-beam square washer has become a key component in connection and fastening systems across multiple industrial fields. Below is a categorized introduction to its most representative application scenarios.

In the field of precision manufacturing, flush nut fasteners are key components that ensure the efficient operation of equipment. Their unique structural design enables complete fitting of the connection surface, effectively eliminating stress concentration. They play an irreplaceable role in fields with strict precision requirements such as aerospace, medical devices, and high-end instruments. Ma

In the precision world of industrial manufacturing, a small steel ball often plays a crucial role. With its outstanding performance, 440C steel balls have become an ideal choice in numerous fields. From mechanical transmission to high-end instruments, they interpret the industrial philosophy of "small components, great functions" through their stable quality and reliable performance.

Common surface treatment methods for fasteners such as screws and nuts, and resistant screws

The anti loosening of bolts is a very important aspect in various types of mechanical connectors. There are many ways to prevent bolts from loosening in daily life, including using spring washers to prevent loosening. Spring washers are often referred to as spring washers in the screw industry. So why is it frequently used? This depends on the function and principle of spring washers.

Why do screws made of stainless steel also rust?

How to Harden Screws - Screw Hardening Process Flow

Usage of Wall plug

DIN9021 Large Flat Washer