Need the size thread and diameter for a BR/SX Fuel pressure regulator

[4g63forlife]

I drove my car to the track about a week ago and managed to get the car home but it started to act funny it turns out that the set screw on the top of the FPR actually vibrated off the regulator, does any body know the size/thread of the set screw and lock down nut?

 

[gravityforce]

I would call br for that info (440)-839-1900, br's cutomer service imo is great !
good luck.