Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BA20357-1 found under Standoff Threaded S by At And T Corp. The National Stock Number assigned to this part is 5340003192270, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BA20357-1.