Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SS5302C4-12 found under Screwmachine by Sikorsky Aircraft Corporation. The National Stock Number assigned to this part is 5305016902149, 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 SS5302C4-12.