Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BTK-280-030B found under Bottle Screw Cap by Fisher Scientific Co. The National Stock Number assigned to this part is 8125014082577, and the Federal Supply Class is 8125 Bottles And Jars. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BTK-280-030B.