Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M43003 found under Grommet Nonmetallic by Spectro Inc. The National Stock Number assigned to this part is 5325014453844, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like M43003.