Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number JK249H-175W found under Standoff Threaded S by Federal Aviation Administration. The National Stock Number assigned to this part is 5340015800556, 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 JK249H-175W.