Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SFR440-3 16 found under Screw Machine by Accurate Prescision Fastener Corp. The National Stock Number assigned to this part is 5305015050001, 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 SFR440-3 16.