Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P7857 found under Retainer Semiconductor Device by Projects Unlimited Inc. The National Stock Number assigned to this part is 5961000183292, and the Federal Supply Class is 5961 Semiconductor Devices And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like P7857.