Chevrolet horn button screws

[M.Morren]

Hi,

What kind and size scews are used to hold down the horn button assembly on a Chev steering wheel? Mine has two short phillips head machine screws of different lengths which possibly have damaged the thread in the steering wheel (one of them will not stay in anymore). I'd like to get some new screws for mine but have no idea what thread size and type of head to look for.

Thanks!