Latrobe Foundry fittings are right-hand threaded. Fittings are random tested at 120 pounds of air pressure under water, for a normal surface condition rating of 150 pounds of pressure. The fittings have a general conformance with dimensional standard MIL-DTL-52618-E and pipe threads are in accordance with ANSI/ASME B1.20.1. Constructed of Aluminum alloy 6061-T6, not anodized. Individual fittings are not marked with alloy or pressure data. Used in a variety of businesses, including agricultural, chemical, construction and marine industries.