Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FR-1.5-150-M found under Kit Repair Sight Fluid Indicator by Federal Resources Incorporated. The National Stock Number assigned to this part is 6680015464097, 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 FR-1.5-150-M.