Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2F3861 found under Screw Machine by Caterpillar Inc. The National Stock Number assigned to this part is 5305000122159, 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 2F3861.