80 Years of Experience
IEH founded as L. Offerman Tool and Die, 1941, by Louis Offerman and his two sons, Bernard and Seymour.
IEH produces tools and dies in support of the war effort during WWII.
IEH begins producing transistor sockets for consumer electronics
IEH goes public, begins producing cathode ray tube (CRT) sockets for the television industry. Becomes the largest CRT manufacturer in the world, shipping 70M annually.
IEH begins manufacturing hyperboloid contacts, obtains gov’t approval to produce Mil-DTL-55302 connectors, and begins transitioning from CRT sockets to Mil-Spec PCB connectors for defense and aerospace
IEH business in Mil-DTL-55302 “takes off”, due to customer demand for lower insertion forces.
IEH moves from Manhattan to Brooklyn, and expands our product lines.
80 Years of Excellence
IEH continues to be one of the world’s leading producers of Hyperboloid connectors and contacts, and continues to diversify and expand product offerings.
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