GRANITE CITY ELECTRIC SUPPLY CO.

Granite City Electric Supply Co. specializes in the supply and procurement of incandescent lamp assemblies and related components, primarily serving defense-related applications. Their core capability centers on the manufacturing and delivery of standardized lighting components that meet military specifications, including ruggedized designs for operational environments where reliability and durability are critical. The company demonstrates technical proficiency in producing filament-based lighting systems compliant with defense-grade performance standards, ensuring compatibility with legacy and mission-critical equipment. Their specialization lies in the precise fabrication of lamp bodies, bases, and internal components to exacting dimensional and electrical tolerances, supporting sustainment and replacement needs in field-deployed systems. The contractor has delivered products exclusively to the Department of Defense, indicating a focused relationship with military logistics and maintenance channels. Work performed supports equipment modernization, facility lighting upgrades, and spare parts replenishment across installations requiring incandescent illumination solutions, particularly where LED alternatives are not yet fully integrated or certified for specific use cases. Their primary industry focus is on Electric Lamp Bulb and Part Manufacturing (NAICS 335110), a niche segment within the broader electrical components supply chain. This positions them as a specialized supplier for legacy lighting systems still in use across defense infrastructure, vehicles, and instrumentation panels. They serve a highly specific vertical requiring adherence to military standards for thermal stability, shock resistance, and long-term operational integrity. Granite City Electric Supply Co. operates as a small, specialized supplier with no publicly listed certifications. The company’s geographic presence and organizational structure are not disclosed, but their contract activity suggests a targeted, niche role within the defense supply base, providing essential components that support the continued functionality of aging military systems. Their market positioning is defined by precision manufacturing of a single, critical component category rather than broad product diversification.