Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 40090NR found under Mirror Glass by J M L Optical Industries Inc. The National Stock Number assigned to this part is 9340014972310, and the Federal Supply Class is 9340 Glass Fabricated Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 40090NR.