Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HT005121 found under Initiator Propellant Actuated by Alliant Techsystems Operations Llc. The National Stock Number assigned to this part is 1377014375662, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HT005121.