The 77317-403-32LF: The base product number is 77317; the -403-32LF suffix specifies the 32-position, right-angle, tin-plated variant.
UL94 V-0 rated thermoplastic insulation — the housing will not sustain a flame in an enclosed equipment scenario, meeting the flammability requirement for most commercial and industrial electronics. Black insulation color is standard for BERGSTIK® headers; the part ships in a bag, not tape-and-reel, so it is suited for hand-assembly or low-volume production runs.