Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12508621 found under Bar Emergency Rescue by Ceradyne Inc. The National Stock Number assigned to this part is 2590015502593, and the Federal Supply Class is 2590 Miscellaneous Vehicular Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 12508621.