Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 133613-1 found under Spacer Special Shap by Rotating Precision Mechanisms Inc. The National Stock Number assigned to this part is 5365016516496, and the Federal Supply Class is 5365 Bushings Rings Shims And Spacers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 133613-1.