Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B2A-R found under Lamp Incandescent by Chicago Miniature. The National Stock Number assigned to this part is 6240015162324, and the Federal Supply Class is 6240 Electric Lamps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B2A-R.