Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SB-100PXR found under Light Ultraviolet Metals Examini by Spectronics Corporation. The National Stock Number assigned to this part is 6635006115617, 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 SB-100PXR.