Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 278123 found under Spacer Special Shap by B V R Technologies Co. The National Stock Number assigned to this part is 5365013175339, 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 278123.