MCMELLON BROS., INCORPORATED

MCMELLON BROS., INCORPORATED specializes in the precision manufacturing of high-integrity fasteners and critical mechanical components for defense and aerospace systems. The company produces a range of engineered nuts, including plain round, self-locking, and castellated variants, as well as specialized locknuts for aircraft gearboxes, ensuring compliance with stringent military specifications for vibration resistance, torque retention, and material integrity. Their technical expertise lies in cold forging, thread forming, heat treatment, and surface finishing processes that meet ASME, ASTM, and MIL-SPEC standards, with a demonstrated ability to deliver mission-critical hardware for complex mechanical assemblies in harsh operational environments. A key differentiator is their focus on small-batch, high-reliability production for defense applications where dimensional accuracy and traceability are non-negotiable. The contractor maintains a consistent relationship with the Department of Defense, supplying precision fastening systems used across ground, air, and maritime platforms. Their work supports logistics, maintenance, and sustainment operations by providing replaceable components essential to aircraft and vehicle assembly and repair cycles, indicating deep integration into defense supply chains for spare parts and overhaul programs. Primary industry focus centers on bolt, nut, screw, rivet, and washer manufacturing (NAICS 332722), with supplementary capability in aircraft manufacturing (NAICS 336411), particularly in the production of subsystem fasteners for propulsion and transmission systems. This positions them as a niche supplier within the defense industrial base, serving as a trusted source for mission-essential hardware requiring strict quality controls and just-in-time delivery. As a Women-Owned Small Business and Woman-Owned Business certified firm based in Stratford, Connecticut, MCMELLON BROS., INCORPORATED leverages its small business status to deliver agile, responsive manufacturing solutions within federal procurement frameworks. Their geographic presence in the Northeast corridor supports efficient logistics to major defense hubs and shipyards.