The HD16-6-12S-B010 is a 6-position plug connector featuring size 12 contacts with rear threads and a B010 coupling ring modification designed for mating applications in industrial and commercial transportation systems. This connector is part of the HD10 series and accommodates 10–14 AWG wire (5.0–2.0 mm²) with a standard wire sealing range of 0.134–0.170 inches (3.40–4.32 mm) outside diameter to maintain environmental seals in rear connector cavities. The connector supports a maximum rated current of 25 A at 125 °C continuous operation per size 12 contact specifications. The B010 modification provides an integrated coupling ring specifically for secure mating, and this modification is exclusively available on this connector model. This plug connector is commonly used in vehicle electrical systems, agricultural equipment interfaces, and industrial control applications where reliable environmental sealing and secure mechanical coupling are critical requirements.