Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BP-004-81-0001 found under by Dampp Chaser Electronics Corp. The National Stock Number assigned to this part is 3040012448541, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BP-004-81-0001.