Name this bolt, please.

[Ron Nossaman]

> They probably won't bother to find them, so I have the problem of 
> getting new ones.  Luckily the thread is 3/8" British Standard Whitworth 
> and as a last resort I could have a welder make them up from coach 
> bolts, but I'd rather look for the proper things first.  The question is 
> : what do you call a bolt of this style that is not a wing bolt?
> 
> JD

I confess! It's a thumb bolt, or thumb screw.

Ron N