Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MB89-5- 3 found under Bolt Shoulder by Hi Shear Corporation. The National Stock Number assigned to this part is 5306010459512, 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 MB89-5- 3.