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Steel Bolt Nut Threaded Fastener Hardness Force Metric Conversion Table Standards UNC

UNC, UNF and UNEF Thread Table

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The table below shows the types of screw threads, sizes, and specifications of Unified Coarse (UNC), Unified Fine (UNF) and Unified Extra Fine (UNEF) threads.

Unified Coarse UNC Unified Fine UNF Thread

Thread sizes are not directly interchangeable.  For guidance only.

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