The Hirose GT13SH-1/1S-R is a secondary-lock retainer from the GT13 series, designed to secure crimped terminals inside a GT13 housing. It is a Gray Polybutylene Terephthalate (PBT) accessory that snaps into the housing after the terminals are loaded, providing positive retention against wire pull-out. This specific retainer is for use with GT13 housings of 2 positions — it is not a housing or terminal itself, but the lock that keeps the terminal in place.
Position Count Matching
The GT13SH-1/1S-R is for 2-position GT13 housings. If your assembly uses a 3-position housing, the correct retainer is the GT13SH-2/1S-R (or GT13SH-2/1P-R for the other keying). The position count is the primary selection filter — a 2-position retainer will not align with the terminal cavities in a 3-position housing.
Material and Construction
The body is molded from Polybutylene Terephthalate (PBT), a common engineering thermoplastic for connector accessories. PBT offers good dimensional stability, chemical resistance, and mechanical strength for the snap-fit retention function. The Gray color aids visual identification during assembly — a small but practical detail on a crowded harness board.