CO-03HDF(3/16)0445 MIL-C-3432 is a 3 conductor, Flexible, Heavy Duty, Low temperature, oil and heat resistant, -55 °C to +75 °C Cable

The M3432 cables that are considered heavy duty and must be able to withstand heavy vehicles and severe flexing. Applications for these cables may include; heavy portable tools and equipment, charging cables, and power and control cords. Medium duty and light duty cannot withstand as much impact as the heavy duty type and often the lightweight is used for portable tools and generators only.