Allan Aircraft Supply Company is one of the leading manufacturers of hydraulic fittings in the United States. Operational since 1952, the company offers a line of ring seal, swivel nut and flared tube fittings. It provides weld ends, machine flares and straight thread adapters. Allan Aircraft Supply Company serves the aerospace, petrochemical, marine and food processing industries. The company utilizes a variety of materials, such as titanium and hastelloy. Its clients include Boeing, Honeywell International, FMC Corporation and United Technologies. Allan Aircraft Supply Company is a recipient of ISO 9001:2000 and AS 9100 certifications. The company also offers an online catalog.