GUILL TOOL & ENGINEERING CO INC

Guill Tool & Engineering Co Inc specializes in the precision manufacturing of mission-critical metal components for defense systems, with deep expertise in fabricated pipe and pipe fittings, metal valve assemblies, and threaded fasteners. The company produces high-integrity fluid system components—including unions, flanges, stems, and quick-release pins—designed for demanding operational environments. Their technical capabilities span CNC machining, threading, forging, and assembly of complex hydraulic and pneumatic fittings, often to military specifications. They also demonstrate advanced competency in manufacturing bare printed circuit boards and electrical components, indicating cross-domain engineering agility. Their ability to deliver both mechanical and electrical subsystems under tight tolerances positions them as a niche supplier for integrated defense hardware requiring dual-domain reliability. The contractor maintains a consistent and exclusive relationship with the Department of Defense, supplying mission-essential parts across multiple platforms, from naval and ground vehicle systems to specialized mining and support equipment. Deliverables include components for fluid control systems, valve assemblies, and instrumentation hardware used in ruggedized military applications, suggesting direct support to logistics, engineering, and field maintenance units. Their primary industry focus lies in fabricated metal components for fluid systems, with strong emphasis on NAICS 332996 and 332919—categories encompassing custom-engineered pipe, valve, and fitting assemblies. They also serve niche markets in electrical component manufacturing and mechanical power transmission, indicating a strategic positioning as a multi-disciplinary Tier 2 supplier to defense prime contractors requiring low-volume, high-reliability production. Guill Tool & Engineering Co Inc is a small, privately held manufacturer based in West Warwick, Rhode Island, with no federal certifications on record. Operating as a 2L entity, they function as a specialized fabricator serving the U.S. defense industrial base through agile, precision manufacturing capabilities. Their geographic location in New England’s industrial corridor supports access to skilled labor and supply chain networks critical to defense production.