The Hirose GT13SC-1/1S-R is a retainer, not a connector body or terminal — it locks the crimped contacts into the GT13 housing after insertion. This is the piece you fit after the contacts are seated, before the housing is mated to its header.
Which GT13 Housings It Works With
The retainer is listed for use with GT13 series housings. It is not universal across all GT13 cavity counts — the retainer's keying and length are specific to the number of positions in the housing. The GT13SC-1/1S-R mates with the single-position GT13 housing; the sibling GT13SC-4/1S-R serves the 5-position housing, and the GT13SC-2/1PP-R covers the 3-position variant. Match the retainer to the housing position count, not the other way around.