Cannon
The D38999/26JH21HC part is a circular connector manufactured by ITT Cannon. It is part of the MIL-DTL-38999 series of connectors, and is a 10-position connector, with a shell size of 26, 6 keying pistons, and an H/C keyway (H/C stands for “High Current”). This connector has 500 insertion cycles, gold-plated contacts, and a finished shell with an Olive Drab Chromate Cadmium (ODC) finish.