Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 0003957-0001 found under Circuit Card Assembly by Sms Technologies Inc. The National Stock Number assigned to this part is 5998011389088, 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 0003957-0001.