Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 300173F138 found under Screw Special by Lidgerwood Manufacturing Company. The National Stock Number assigned to this part is 5305002753585, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 300173F138.