These Pogo Pins provide reliable spring-loaded electrical contacts for programming, testing and custom jigs, with a slim 1mm body that fits neatly into most protoboards and perfboards.
Pogo pins are little spring-loaded contacts, very handy for making jigs, or making momentary (but electrically solid) contacts. We use them by the dozen for making programming and testing jigs but they're handy also if say you want to JTAG program a board that you cant solder headers to - just shove these thin contacts into a 0.1" pitch IDC programming cable and press it onto the contacts.
These particular pins are (in our opinion) ideal because they are skinny enough to fit into most protoboards or perfboards - they have a 1mm diameter body (the gold part) but the spring contact head is 1.3mm wide. The uncompressed length is 16.5mm, compressed is 14.2mm.
