CASHCO 830-H2-5-P1302-85 Rev N, spring  

This is a specific Cashco spring part number used in their industrial pressure reducing or back-pressure regulators (such as the Model D or P series).
Model Line: 830
Spring Characteristics: Denoted by "H2" and "5" (typically indicates a specific wire gauge, diameter, and spring rate).
Material/Coating: Indicated by "P1302-85" (references specific metallurgy or corrosion-resistant protective coating).
Revision: "REV N" signifies the fourteenth design iteration of this specific part