Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 495150-300 found under Washer Lock by Spd Electrical Systems Inc. The National Stock Number assigned to this part is 5310009338119, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 495150-300.