McMellon Bros

McMellon Bros Inc is a leading U.S.-based manufacturer of flight safety-critical threaded components for the aerospace industry, with over seven decades of specialized expertise dating back to 1951. The company manufactures precision threaded partsincluding heat-treated alloy and refractory metal spanner nuts and custom configurationsto the tightes... t customer tolerances, with diameters ranging from 7/16 inches to 16 inches and lot sizes from one to 10,000 units. McMellon's production capabilities span thread milling, drilling, milling, grinding, sawing, lapping, cutting, and deburring, supported by substantial investments in modern CNC machine tools and an extensive array of precision inspection equipment. All production machinery and inspection systems are subject to rigorous scheduled maintenance and calibration programs to ensure consistent quality and reliability. The company manufactures threads conforming to Federal and Military specifications including FED-STD-H28, MIL-S-7742, MIL-S-8879, and the latest aerospace standards AS7742 and AS8879, along with various metric specifications and thread inspection methods A, B, and C across systems 21, 22, and 23. McMellon Bros holds ISO 9001:2008 and AS9100:2009 Rev C certifications, reflecting its commitment to the highest quality standards. Operating from a 20,000-square-foot facility, the company's competitive advantage rests on its highly experienced workforce, with manufacturing management totaling over 100 years of combined experience in close-tolerance threaded part design and production, and skilled craftsmen averaging more than 15 years of tenure. This depth of expertise and operational discipline enables McMellon to deliver flight-critical components with the precision, reliability, and consistency demanded by leading aerospace customers and original equipment manufacturers.Read More