Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ST3M607-5D18 found under Bolt Shoulder by Monogram Aerospace Fasteners Inc. The National Stock Number assigned to this part is 5306012100755, 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 ST3M607-5D18.