Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number IM75-29A19-4F found under Cover Battery Box by Lfe Instruments. The National Stock Number assigned to this part is 6160006357636, 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 IM75-29A19-4F.