The 953381-1 is a 6-position locking device designed for the Micro Quadlok System (MQS) unsealed receptacle housings. It is constructed from PBT GF20 material and is compatible with receptacle housings that accommodate wire sizes from 0.35 to 0.75 mm². The locking device features a black color and integrates with the MQS connector system to provide secure mating and retention of connector pairs. This component is commonly used in applications requiring reliable, compact interconnections in automotive, industrial, and consumer electronics where the MQS system is specified for space-constrained environments.