[MOTORHEAD]

I see both pieces are splined to prevent rotation of the stud. You might try pressing the stud back in with some Locktite Red.

p.s. It's the same latch used on many old british cars, such as the MG "t" series. Call one of the vendors ( Victoria British, Moss Motors, or the like ) and have them o'nite one to you, or better yet, check with a local British/ sports car repair/restoration shop, they might have one laying around.

Good luck !
Ted