Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A25-C found under Screw Stock by Sturm Ruger And Company Inc. The National Stock Number assigned to this part is 5305007151998, 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 A25-C.