Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HCA 1 2 13X24SAE GR5 UNCOATED found under Screw Cap Socket Head by Flowserve Corporation. The National Stock Number assigned to this part is 5305012698163, 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 HCA 1 2 13X24SAE GR5 UNCOATED.