Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FD-1 HP7940 HP7941 HE8118 found under Fire Detection Syst by Hiller Companies Inc The. The National Stock Number assigned to this part is 6350013142222, 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 FD-1 HP7940 HP7941 HE8118.