Industrial NAS1097AD5-5 Aluminum 100 Degree Flush Head Rivet

NAS1097AD5-5 is a National Aerospace Standard solid rivet with a 5/32-inch shank diameter and a 5/16-inch overall length, designed for flush-mount installations in aerospace assemblies. It features a 100-degree flush head, also described as a flush-shear head, which seats below the surface to deliver a smooth exterior on skin and panel joints. The rivet is manufactured from aluminum alloy, with distributor listings commonly identifying 2117-T4 aluminum alloy, and it is typically sold in 1-pound quantities by major aerospace fastener vendors. Typical dimensions include shank diameter 0.156 inches, head major diameter about 0.312 inches, and a flush countersunk head angle of 100 degrees, confirming its small-profile, high-shear-strength profile suitable for thin-plate assemblies. Used primarily in aerospace structural skin joints where flush, low-profile fasteners are required, NAS1097AD5-5 is installed with standard rivet tooling to meet NAS1097 requirements.