Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 66HF377A1063MILL6085 found under Bearing Sleeve by Bound Brook Bearing Co. The National Stock Number assigned to this part is 3120008542138, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 66HF377A1063MILL6085.