These custom precision step pins were manufactured domestically in the USA using 303 stainless steel material per ASTM A581, with the raw material comprising of 3/16" round USA melt bar stock.  The outside diameter is .031" +/- .002" for the extended pin and .125" +.0005/-.0000.  Overall length was set to .313" and a 45 degree chamfer was incorporated on both sides of the .125" diameter portion.  Full certs were provided with the parts for our customer in the medical device manufacturing industry.