Aluminum Machine Screws 1/4 in-20 x 1 in Round Head Combo Drive 10-Pack These 1/4"-20 x 1" aluminum machine screws are engineered for lightweight fastening applications where corrosion resistance, reduced magnetic interference, and lower spark risk are important. Manufactured from durable aluminum, they offer a reliable solution for non-structural assemblies in aerospace panels, robotics builds, marine trim, electronics housings, and laboratory equipment. The round head combo drive design provides installation flexibility, allowing use with either a slotted screwdriver or Phillips driver. The standard 1/4"-20 UNC coarse thread ensures compatibility with commonly available nuts and tapped components, making these screws ideal for maintenance, repair, and custom fabrication projects. Aluminum fasteners are significantly lighter than steel alternatives, making them especially valuable in performance-sensitive applications such as drones, RC models, and lightweight enclosures. Additionally, their non-magnetic and non-sparking properties make them suitable for use in sensitive instrumentation or controlled industrial environments. Each pack includes 10 aluminum machine screws, precision-formed for consistent threading and smooth installation. Recommended for light to medium duty fastening where reduced weight and corrosion resistance are priorities. Not intended for high-load structural applications.