Or in this case, a pair of screws. It seems someone 'cleaned up' my work area. Gone are the two screws to hold the combination valve to the frame of my '85 Parisienne (read Delta 88). Anyone able to check and see the size screw it takes.

 

Got a tap and die set?

 

Yep, but I'd rather avoid that alternative if possible. The weather's foul and lying in the puddle under the car isn't high on my list of ways I want to spend the evening.

 

Probably metric fine pitched 13 mm bolt

 

Turns out ... M8 x 1.25, 50mm. Probably should have gone with a bit shorter, but since it's only into the frame rail, a little longer didn't hurt any.