520987-1 is a 4-circuit .250 Series FASTON multi-position housing connector designed to accept .250 Low Insertion Force (LIF) terminals. The housing is constructed from nylon material with a V2 flammability rating per UL 94, finished in black color. It features dimensions of 1.082 inches (27.48 mm) in length, 0.900 inches (22.86 mm) in width, 0.379 inches (9.63 mm) in height, and 0.220 inches (5.59 mm) in depth. This connector is recognized under the Underwriters Laboratories Component Program (File Nos. E28476 and E13288) and is RoHS compliant. The housing is commonly used in automotive and industrial applications where reliable multi-position electrical connections with low insertion force requirements are needed.