These ABAC MIL-DTL-38999 Series III connectors were developed to meet the stringent requirements of the Military, Industrial and Aerospace Industries. The Robust design of these versatile 38999 connectors is ideal for use where shock and EMI/RFI protection is required, also these MIL-DTL-38999 connectors have a quick mate threaded coupling system combined with a high performance anti-vibration mechanism. A unique feature of these connectors is a stub acme style thread on the coupling nut and receptacles to avoid the possibility of cross threading which also ease of blind mating. The EMI-RFI performance of these 38999 series III connectors is enhanced further by the built in grounding spring mechanism.