Screws

Aviation screws are some of the most common hardware components found on an aircraft. They serve a similar function as bolts, though they are not as strong and cannot be as precisely torqued. Aircraft-grade screws are divided into three main types: structural screws, which are typically made of corrosion resistant alloy steel and designed for high shear and/or tensile strength; machine screws, which are general purpose components typically used for maintenance and repair; and selftapping screws, which are mostly used for attaching removable parts.

Aircraft screws come in a variety of head styles, including hexheads that can be used with a screwdriver or a wrench, slotted heads, countersunk heads, and washer heads. Additionally, drive screws, which function more like a nail than a screw, feature an unslotted flat head.