The trickiest part was the 1250 MPA requirement, which is a deviation from the standard NA0069A040046 specification.  We were able to supply the custom part faster than our original promise date at approximately 3 weeks from order receipt.  M4-0.7 thread was incorporated and test results confirmed 39-40 HRC after AMS 2759/3 Rev. F heat treat process.  NADCAP certified passivation per AMS-2700 was also performed and all certifications were provided to our customer with the parts.