Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1103538-L4025B found under Load Assembly Test by N H Researchincorporated. The National Stock Number assigned to this part is 4920012980869, 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 1103538-L4025B.