FEATURES:
UNC (Unified National Coarse) Chrome Alloy Circular Split Button Die
- This 60º thread form was introduced in 1948 as an attempt to standardise thread forms in the USA, Canada and the UK.
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The thread profile of UNC is the same as for metric threads and is described in the JIS B0206 standard.
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The thread is described by its major diameter and the number of threads per inch of length (TPI).
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This thread series is commonly used in the mass production of bolts, screws and nuts.
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It is used for threading into lower tensile strength materials (bronze, brass, aluminium and plastics) to obtain the best resistance to stripping of the internal thread.
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It is also used on quick assembly or disassembly or if corrosion or slight damage is possible.