Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 178931 found under Standoff Threaded Spacing by Telemechanics Inc. The National Stock Number assigned to this part is 5340000854171, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 178931.