Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 99-138-7313 found under Bolt Machine by Nato Stock Number Assigned By An. The National Stock Number assigned to this part is 5306013523091, 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 99-138-7313.