GREISEN AEROSPACE, LLC

Greisen Aerospace, LLC specializes in the precision manufacturing of mission-critical metal components and subsystems for defense and government applications. The company excels in fabricated structural metal fabrication, mechanical power transmission systems, and specialized containerization for high-value payloads, including marine mammal transport crates and missile system hatch assemblies. Their technical expertise spans roller gate chains, armored vehicle cradle repair kits, and modular test equipment meeting stringent military specifications, demonstrating deep competency in mechanical assembly, structural integrity validation, and custom metal forming under tight tolerances. Greisen’s ability to deliver sole-source, low-volume, high-reliability parts—often for legacy or niche systems—sets them apart as a responsive, agile manufacturer for complex, non-standard defense requirements. The contractor maintains a consistent relationship with the Department of Defense, delivering components for armored vehicle maintenance, naval infrastructure upgrades, and missile system ancillaries. Their work supports ground systems, maritime operations, and aerospace logistics, with a focus on field-deployable hardware requiring ruggedized construction and strict compliance with military drawings and performance standards. A single award with the Department of Commerce highlights their capacity to adapt precision manufacturing to scientific and environmental logistics needs. Greisen’s primary industry focus lies in fabricated metal structures, mechanical power transmission, and specialized container manufacturing—NAICS codes 332312, 333613, and 332439—reflecting a niche positioning as a Tier 2 supplier for defense subsystems requiring custom metal fabrication and assembly. They serve the defense industrial base by filling gaps in legacy system sustainment and specialized logistics support. As a small business structured as 2J and based in Brunswick, Maine, Greisen Aerospace operates as a lean, vertically integrated manufacturer with no federal certifications listed. Their geographic proximity to Northeastern defense and maritime assets enhances their responsiveness to regional government and military logistics demands.