Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 387-3345-5 found under Bolt Shoulder by W Machine Works Inc. The National Stock Number assigned to this part is 5306012943352, 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 387-3345-5.