British Association Threads

August 5, 2017 Nigel 0

A British system of threads with 47.5° included angle with rounded roots and crest. Even numbers are the preferred sizes. Favoured by model engineers, Stuart Turner models are traditionally supplied with odd numbered BA nuts [more…]

Metric Threads

July 30, 2017 Nigel 0

The most commonly used type of general-purpose screw thread, one of the first international standards agreed when the International Organization for Standardization was set up in 1947. Metric threads are becoming more common in model [more…]