L177DFC37S1ATN is a 37-pin D-Sub connector featuring screw-machined contacts manufactured by Amphenol Commercial Products, compliant with MIL C24308 and NFC93425-HE5 standards. The connector utilizes a steel tinned shell with dimples on the plug connector, glass-filled thermoplastic insulator (UL 94V-0), and brass contacts with full gold plating over 2 µm nickel for the straight version. It supports a current rating of 7.5 A and is available in multiple termination options including straight PCB with various tail lengths (3.2 mm, 4 mm, 5.5 mm, 2.4 mm), right-angle PCB configurations, and European footprint variants with 2.54 mm or 2.84 mm row spacing. The connector is suitable for industrial instrumentation, data acquisition systems, and panel-mounted applications requiring reliable high-density signal transmission.