Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 157750-F ITEM 20 found under Packing Assembly by Lidgerwood Manufacturing Company. The National Stock Number assigned to this part is 5330011996185, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 157750-F ITEM 20.