Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6B3053 found under Pin Shoulder Headed by Caterpillar Inc. The National Stock Number assigned to this part is 5315004265441, 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 6B3053.