In machining and industrial hardware supply, after customers finish confirming RoHS, REACH, and PFAS Free, the next question that often comes up is: “Do you have an EN 10204 3.1 material certificate?” For many suppliers, this document looks like just an English report—but in reality, it often becomes a key factor in whether the customer will move forward with cooperation. --- 1. What Is EN 10204—What Does It Actually Control? EN 10204 is a document standard established by the

Many machining suppliers have experienced this: A customer emails for a quote, and the first question isn’t price or lead time. Instead, they ask:“Is it RoHS compliant? Do you have REACH? Is it PFAS Free?” A common reaction is confusion—or even a bit of panic:“We only do machining. Why are they asking us this?”“Isn’t this only for electronics?”“Do we have to send everything to a third-party lab?” In reality, customers aren’t trying to make things difficult. They’re doing some

Helical Insert When repairing machines, installing equipment, or servicing parts, many people have run into this problem:No matter how you tighten the screw, it won’t hold—the threaded hole is stripped. If you simply switch to a larger screw, it often affects the structure.If you re-tap the hole, it may not hold and can fail again quickly. That’s when a Helical Insert becomes a practical and widely used solution. --- 1. What Is a Helical Insert? In Simple Terms: It Rebuilds a

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 appears: You can confirm the specs clea

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

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 systems differ in units,