S & H Engineering

Since 1980, S & H Engineering has evolved from a small machine shop into a 20,000 sq. ft. advanced manufacturing facility in Chelmsford, MA. Our team combines cutting-edge technology with hands-on expertise to deliver precision prototypes and components for aerospace, defense, industrial, and commercial applications. We maintain ITAR registration and security clearance to handle sensitive projects while adhering to strict quality control standards. Our comprehensive capabilities span design, engineering, CNC machining, sheet metal fabrication, assembly, and inspection services. We specialize in transforming concepts into production-ready prototypes through collaborative CAD design and rapid prototyping technologies like stereolithography. Our engineers work closely with clients to optimize designs for precision, performance, and manufacturability.

With both prototype and production milling/turning services, we ensure components meet exact specifications through rigorous in-process and final inspections. Our ESD-safe assembly and testing area supports secure handling of sensitive electronics, while our inspection division provides dimensional verification for customer projects. We pride ourselves on responsive, customer-driven service tailored to individual needs, offering support from concept development to market-ready solutions. Our steady growth reflects our commitment to integrating leading-edge technology with traditional manufacturing methods to meet evolving market demands.