Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NAS1143E3P found under Screw Close Toleran by 3 V Fastener Co Inc. The National Stock Number assigned to this part is 5305013733846, 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 NAS1143E3P.