Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3854AS400-10 found under Reamer Drill by Spenro Industrial Supply Co Inc. The National Stock Number assigned to this part is 5110015759149, and the Federal Supply Class is 5110 Hand Tools Edged Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3854AS400-10.