The rugged, fool-proof quick-disconnect operation of firm's Breech-Lok MIL-C-38999 Series IV circular connector product line is the subject of a 20-page, full-color brochure, which also covers recent improvements to the line. The connectors meet or exceed all performance requirements of the MIL-C-38999 Series IV specification. They provide resistance to fluids, corrosion, high shock, sustained vibration, and heavy rear accessory loads while providing EMI/EMP protection through grounding fingers located within the plug housing. The brochure also includes complete data on available materials and finishes; a contact part number cross-reference; general data and service rating charts; and engineering drawings and dimensional information on the circular connectors to simplify for designers the selection process.