Industrial BSO-3.5M3-8ZI Blind Threaded Standoffs

BSO-3.5M3-8ZI is a PEM blind-threaded standoff designed to be self-clinched into sheet metal, providing a flush, removable mounting point for assemblies. This metric-size standoff uses M3 threading with a 0.5 mm pitch and has a 3.5 mm overall length, with the part number encoding the length and finish as 3.5M3-8ZI. The 8ZI designation indicates a zinc-immersion finish for corrosion resistance. It belongs to PEM’s BSO/BSOA/BSOS family of blind standoffs, offering internal threads for securing a mating fastener while remaining recessed within the sheet after clinching. Typical applications include mounting PCBs, panels, or housings in electronics enclosures, aerospace components, and industrial equipment where a compact, low-profile spacer is required. The BSO family is specifically designed for self-clinching into metal sheets, delivering a stable, repeatable standoff with reliable thread engagement for repeated assembly cycles.