Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5B6-20 found under Bolt U by Hi Shear Corporation. The National Stock Number assigned to this part is 5306011228932, and the Federal Supply Class is 5306 Bolts. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5B6-20.