Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HSHRFS1001-3-474000-5030RN found under O Ring by Hiller Companies Inc The. The National Stock Number assigned to this part is 5331015617787, 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 HSHRFS1001-3-474000-5030RN.