International Hardware Parts Platforms When designing equipment, repairing machines, or preparing to purchase fasteners and hardware parts, many people don’t start by asking for a quote—they start by searching on international hardware platforms. These platforms are widely used not because you must buy from them, but because they offer clear specifications, well-structured categories, and reliable engineering information. In real purchasing scenarios, however, a common issue

ISO、JIS、DIN、ASME The Essential Beginner’s Guide to Global Fastener Standards The reason hardware parts can be used, replaced, and serviced across machines worldwide comes down to one thing: standards. There are many standards in the world, but in fasteners and mechanical parts, you’ll most often run into these four: ISO, JIS, DIN, and ASME. This article will walk you through the origin, differences, and use cases of these four major standards in a clear and practical way, so

Global Fastener Standards When searching for screws, nuts, washers, retaining rings, or dowel pins, you may encounter a long list of standards: DIN, ISO, JIS, ANSI, ASTM, CNS, GB, BS, AS…Why are there so many? What’s the difference? How do you choose the correct one? This article breaks down the origins, differences, and real-world uses of global fastener standards in a clear and easy-to-understand way. --- 1. Why Do We Need Fastener Standards? Fasteners are mating parts —scr

Screw You use screws every single day — you just don’t notice them. They’re inside your phone, furniture, motorcycles, cars, computers, door locks, home appliances, factory machines, medical instruments…Small as they are, without screws, the world simply cannot be assembled, cannot operate, and cannot be repaired. This article will help you understand screws quickly — their functions, materials, and where they are used. --- 1. What is a screw and why is it important? A screw

Metric and Imperial In hardware parts, machining, and equipment maintenance, it’s common to encounter a confusing situation: you only want to find a screw or a pin, yet the specifications appear in two completely different formats — one written as M4, M6, M8 (metric), and another as 1/4"-20 or #8-32 (imperial). Many people wonder:“Why aren’t these specifications unified?”“Since they look similar, can they substitute for each other?” The answer is: No.Metric and imperial syste

When installing C-type retaining rings (circlips / retaining rings), relying on bare hands or non-specialized tools can lead to slipping,...

Parallel Key In mechanical transmission and assembly, the parallel key is a small yet crucial component that determines whether parts operate securely. Installed between the shaft and hub (such as gears, pulleys, and couplings), it transmits torque and prevents relative sliding. If the size is chosen incorrectly or installed improperly, it can lead to loosened parts, reduced mechanical precision, or even shaft damage. --- How to Select Parallel Key Size Selection is mainly ba