Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NP5028004 found under Grommet Sight Gage by Cemen Tech Inc. The National Stock Number assigned to this part is 5325011010401, 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 NP5028004.