Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B54-3719C found under Lining Friction by Atb Laurence Scott Ltd. The National Stock Number assigned to this part is 3040003499328, 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 B54-3719C.