172074-7 is a Mark II 187 Series receptacle housing designed for positive lock FASTON terminals, featuring a single circuit configuration in red color. The housing is constructed from 6/6 Nylon material with UL 94 V0 flame rating, providing excellent electrical insulation and mechanical durability. It is designed to work with 0.187 x 0.020 inch tab dimensions and includes an integrally designed depressor for easy removal of mated terminals. The housing dimensions are 0.367 inches wide by 0.205 inches deep by 0.290 inches high, with an overall length of 0.974 inches. This receptacle housing is commonly used in automotive, appliance, and industrial control applications where secure, positive-locking connections are required, and the red color aids in circuit identification and assembly.