Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BXSTS100A found under Fan Circulating by Optimal Integrated Solutions. The National Stock Number assigned to this part is 4140015938939, and the Federal Supply Class is 4140 Fans Air Circulators And Blower Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BXSTS100A.