Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 881-404891 found under Oven Electrical Electronic Compo by Viasys Respiratory Care Inc. The National Stock Number assigned to this part is 5955000813304, and the Federal Supply Class is 5955 Oscillators And Piezoelectric Crystals. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 881-404891.