Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BACJ40D12-48 found under Lead Electrical by R And B Electronics Inc. The National Stock Number assigned to this part is 6150009933927, and the Federal Supply Class is 6150 Miscellaneous Electric Power And Distribution Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BACJ40D12-48.