The HD16-6-12S is a 6-position circular connector plug from the HD10 series designed for industrial and commercial transportation applications. It features 12-size contacts with a threaded rear coupling configuration and is compatible with receptacles such as the HD14-6-12P and HD10-6-12P. The connector accommodates wire sizes of 10–14 AWG (5.0–2.0 mm²) with a standard wire sealing range of 0.134–0.170 inches (3.40–4.32 mm) outside diameter, maintaining environmental seals in rear connector cavities. The B010 modification provides an additional coupling ring for enhanced mating reliability. This connector is widely used in sealed, threaded applications requiring robust environmental protection and secure mechanical coupling in automotive and industrial systems.