Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number OSC-3-400H found under Oscillator Noncryst by Behlman Electronics Inc. The National Stock Number assigned to this part is 5955012542664, 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 OSC-3-400H.