Introduction to Fastener Standards: GB, DIN, ISO and ANSI

GB, DIN, ISO and ANSI are the most common fastener standards. This article briefly introduces each system and how to choose.

1. Why It Matters

In fastener selection and application, Introduction to Fastener Standards: GB, DIN, ISO and ANSI is essential knowledge for engineers and buyers. Mastering it helps avoid selection errors, improve assembly quality and control costs.

2. Core Content

Standards: common metric/inch sizes and GB, DIN, ISO, ANSI systems;
Materials & finishes: 304/316 stainless, carbon steel, alloy steel; zinc, black oxide, e-coating, Dacromet;
Installation: correct torque, matching tools and troubleshooting;
Customization: non-standard sizes per drawings or samples, OEM/ODM supported.

3. Advice from FASTKING

FASTKING (Zhuhai Jiali Hardware) has 20+ years of experience in torx screw manufacturing. ISO certified, covering machine screws, self-tapping, set screws, sems, drilling screws, tools and custom fasteners. Contact us for professional support.

Introduction to Fastener Standards: GB, DIN, ISO and ANSI