Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5S4033 found under Dowel by Caterpillar Inc. The National Stock Number assigned to this part is 5315010671404, and the Federal Supply Class is 5315 Nails Machine Keys And Pins. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5S4033.