Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 581A258ACG1 found under Ring Assembly Colle by Dresser Rand Co. The National Stock Number assigned to this part is 6125012348223, and the Federal Supply Class is 6125 Converters Electrical Rotating. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 581A258ACG1.