These custom electropolished springs are manufactured domestically for our aerospace customer using 17-7PH material per AMS 5678.  .100" +/- .001" wire diameter is used with an overall free length of 1.355".  Outside diameter is 1.069 +/- .010 and the inside diameter is set at .0869".  Parts had to be heat treated to CH900 per AMS 2759, passivated per AMS 2700 method 1 or method 2, electropolished per PPS 300 Type III, and go through magnetic particle inspection per ASTM E1444.

Large quantities of these custom made springs would be best supplied on a 12 month blanket purchase order basis.  The Blanket Order concept allows the customer to access the large quantity cost savings without paying upfront for the entire large quantity order. Instead we take on the burden of carrying the bulk inventory and only release the parts as needed, or often on a pre-scheduled basis provided by the customer.