Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 156821 ITEM 49 found under Absorber Overvoltage by Kongsberg Maritime Sweden Ab. The National Stock Number assigned to this part is 5920015474025, and the Federal Supply Class is 5920 Fuses Arresters Absorbers And Protector. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 156821 ITEM 49.