Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D-1575A found under Switch Sensitive by Devlieg Bullard Ii Inc. The National Stock Number assigned to this part is 5930001745893, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like D-1575A.