Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GGG-R-791 found under Rule Caliper by Federal Specifications. The National Stock Number assigned to this part is 5210002039489, and the Federal Supply Class is 5210 Measuring Tools Craftsmens. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GGG-R-791.