UNC & UNF Fasteners - Nuts, Bolts, Washers & Screws

Range of Unified National Coarse (UNC) &  Unified National Fine (UNF) fasteners such as bolts & nuts, washers and set screws. These threads have a higher number of threads per inch, resulting in a tighter and more precise fit when engaged with a mating part. 

UNC threads are unified coarse-pitch threads. These are less likely to cross-thread, allowing faster assembly and disassembly (Generally used in mass production). Large threads also allow for thicker plating and coatings. 

UNF threads have a finer pitch than UNC threads. This means there are more threads per inch, resulting in more engaged threads and a stronger connection.