Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number STD3053-2 found under Bolt Machine by B E Aerospace Inc. The National Stock Number assigned to this part is 5306009903233, 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 STD3053-2.