These custom 17-7PH compression springs were manufactured domestically and are intended for aerospace manufacturing applications. 17-7 PH Stainless steel material per AMS 5678 was used and the parts were passivated per MIL-S-5002. Heat treat was specificed per MIL-H-6875 and we also had to run the springs 100% through penetrant inspection in accordinace with MIL-STD-6866 Type I, Method A, Sensitivity Level 2. Outside diameter measured .800 inches, inside diameter at .53 inches, and 3-1/2 total coils. First Article Inspection Report (FAIR) was provided with the first batch of these compression springs per customer requirements.