This experimental investigation aims to study the mechanical properties of high silica fiberglass reinforced with graphite nanoparticles. The study will involve the fabrication of composite materials using a combination of high silica fiberglass and graphite nanoparticles. Mechanical tests such as tensile, compression, hardness, and water absorption tests will be conducted to evaluate the strength and stiffness of the composite materials. The results of the study will provide insight into the effect of graphite nanoparticles on the mechanical properties of high silica fiberglass and may have potential applications in industries such as aerospace and construction.