The HUBBELL HBL3765C Twist-Lock Plug is engineered for demanding environments requiring reliable power connections. Its super tough nylon housing provides excellent impact resistance, while the stainless steel shroud protects contacts and prevents mismating. The heavy-duty two-piece external cord clamp ensures maximum strain relief, and the box terminal with hex socket threaded slug allows for high clamping pressure on conductors without damaging strands. The thermoplastic polyester interior offers heat resistance and impact strength, making it suitable for a wide range of industrial applications. This plug is listed to UL 498 and certified to CSA C22.2 No.42, ensuring safety and compliance.