H&H PROPELLER AND SHAFT, INC

H&H Propeller and Shaft, Inc. specializes in the precision machining, inspection, and repair of marine propulsion shafts and related components for government vessels. Their core capabilities center on high-tolerance machine shop operations, including the open inspection, diagnostic assessment, and restoration of critical propulsion shaft assemblies to military specifications. The contractor demonstrates deep expertise in handling proprietary U.S. Coast Guard part numbers, performing non-destructive evaluation, surface restoration, alignment correction, and reconditioning of worn or damaged shafting to meet stringent naval engineering standards. Their technical proficiency lies in reverse engineering legacy components, adhering to original equipment manufacturer tolerances, and ensuring dimensional integrity under operational stress conditions—key differentiators in mission-critical maritime maintenance environments. The company maintains a consistent working relationship with the Department of Homeland Security, particularly supporting U.S. Coast Guard fleet sustainment through direct shaft repair and maintenance services. Their engagements involve complex, time-sensitive interventions on active-duty vessels, indicating a trusted, repeat vendor status within Coast Guard logistics and maintenance commands. Work is typically performed on propulsion systems requiring exacting metallurgical and mechanical compliance, suggesting close coordination with naval engineering teams and adherence to MIL-SPEC and ASTM standards. Primarily operating under NAICS 332710 (Machine Shops), H&H focuses on the niche segment of marine propulsion component repair, positioning itself as a specialized provider within the defense and maritime support supply chain. Their market presence is defined by technical precision rather than broad manufacturing capacity, serving a vertical focused on naval and coast guard vessel readiness. As a small business structured as a 2L entity based in Salem, Massachusetts, H&H Propeller and Shaft, Inc. operates with a lean, highly skilled workforce focused on mission-critical repairs. While no formal government certifications are listed, their consistent award history reflects proven reliability in delivering specialized mechanical services under federal contract requirements.