Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 85710158-301B found under Circuit Card Assembly by Tech Electronic Systems Inc. The National Stock Number assigned to this part is 5998003173682, and the Federal Supply Class is 5998 Electrical And Electronic Assemblies Boards Cards And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 85710158-301B.