Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PK979 found under Parts Kit Brake Shoe by Ausco Products Inc. The National Stock Number assigned to this part is 3040013917828, 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 PK979.