Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number APS20-115-4 found under Grommet Nonmetallic by K And L Microwave Inc. The National Stock Number assigned to this part is 5325010232004, 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 APS20-115-4.