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Deerfield Machine received a request from one of their automotive industry customers for a cold rolled steel hose connector. This part provides a means of attaching a hose on one end with ¾" NPT pipe thread on the other end, and its manufacture called into play multiple capabilities for which Deerfield Machine is well known, including turning, broaching, and zinc plating. Working from tight customer specifications and 2D CAD drawings, Deerfield machine began manufacture of the steel hose connector by using their CNC machining center to turn 12L14 cold roll steel bar stock into a part 1.400" long with a 1.125" outside diameter. A unique feature of this part was machined next, using internal hex broaching, which allows easy installation using an Allen wrench so that the outside surface of the hose connector remains undamaged. This kind of broaching is a powerful process that permits polygons to be cut into a variety of work pieces and materials on virtually any lathe or milling machine. Following the hex broaching, the cold rolled steel hose connectors were deburred and left with their original raw finish. Each one of these machining processes was accomplished to narrow tolerances of ±.005". Both dimensional and visual inspections were used to confirm the fit and finish of the finished hose connectors. Even though a series of skills was required to complete these parts, Deerfield Machine was able to manufacture 5,000 of them in one month for final delivery to customer locations in Texas, Pennsylvania, and California.