Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P17928-2 found under Screw Machine by Paterson Limited T A Paterson. The National Stock Number assigned to this part is 5305015940911, 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 P17928-2.