Metric Threaded Products supplies a wide variety of threaded Fasteners in multiple head styles, drive types, materials and finishes. The Threaded Fasteners Metric & Multistandard offers include but are not limited to: Hexagon Screws, Socket Screws, Machine Screws, Tapping Screws, Threaded Rod, Studs, Pins, Nuts, Pipe Plugs, Grease Fittings, Thread Repair Inserts and Blind Rivet Nuts. The metric thread sizes are different from the inch thread sizes. It is specified using the nominal major diameter and the number of threads per inch. Let us take an example now – a 3/8-16 (coarse) thread size has a 3/8″ nominal major diameter and 16 thread per inch, while a 3/8-24 (fine) thread has the same nominal major diameter and 24 threads per inch. You can more idea of it from our thread pitch chart.