Precision Steel Sleeve MIL-P-3420E

A polished, cylindrical, hollow or solid steel component, likely a precision part such as a bushing, sleeve, or pin, designed for mechanical applications. It was preserved using VCI (Volatile Corrosion Inhibitor) paper (MIL-P-3420E) dated May 1987, indicating it is an NOS (New Old Stock) or military-specification part.