The CD21N6-BK is a black nylon liquid-tight strain relief fitting designed for multi-cable routing through a single 3/4" NPT threaded connection. It features an insert with three holes, each with a diameter of 5.2 mm (0.20 inches), to accommodate and seal individual conductors. Constructed from durable nylon, this fitting operates reliably in a wide temperature range from -40°C to 100°C (-40°F to 212°F) and carries a UL f1 rating. When cable diameters are within 80% of the hole size, the fitting provides a NEMA 4x and IP65 rated seal, making it ideal for control cabinets, machinery, and industrial enclosures.