Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NAS1958C58D found under Bolt Shear by Alkan. The National Stock Number assigned to this part is 5306145522450, 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 NAS1958C58D.