Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KG1-01-11 KEY4-18 found under O Ring by Yamatake Honeywell Co Ltd. The National Stock Number assigned to this part is 5331014412829, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like KG1-01-11 KEY4-18.