We supplied our customer that manufactures fire pump equipment with these custom 17-4ph precision dowel pins using 100% domestic production with DFARS compliant raw material and full certs - material certs, heat treat certs, and a certificate of conformance.  The pins were produced to a diameter of .1249-.1251" and overall length of .670-.675" with equal spherical radii on both sides.  Parts went through heat treatment to achieve the Rc36 hardness minimum requirement.