What is RoHS?

RoHS, lead-free legislation, also known as the "European Directive 2002/95/EC on the Restriction of the use of certain Hazardous Substances in electrical and electronic equipment", will be enforced throughout the European Community beginning July 1, 2006. Its aim is simply to remove a total of six substances from electrical and electronic equipment (EEE), thereby contributing


Can you explain “Thread Class”?

Classes of thread fit are one of three factors one must consider when deciding what type of thread is best for a given fastener application. The other 2 are thread form and thread series. We will discuss thread form and thread series in future Tech Tips. Thread fit is a measure of looseness or tightness


How Can I Avoid Problems with Loosening & Separating Parts?

I have some fasteners that have mating threads, internal and external. Often, I have a problem loosening and separating the parts. Why is this happening, and how can it be avoided? The most likely cause of this condition is thread "galling" or seizing. This occurs when the surfaces of the mating parts are very abrasive.


What Are Tin Whiskers?

Recently we had a problem with a plated product, and I overheard someone in Quality Control talking about "Tin Whiskers". What are "Tin Whiskers", and what can I do about this? We have received a number of questions about "tin whiskers" what they are, how they are formed, and how to avoid them. We

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