Uwe 1/16 fits mine. Beautiful bass by the way, if only Gibson showered us with so many choices on two platforms like Fender does.
We can't be talking about the same thing then, Scott.
1/16 is tiny - that is probably the size of the allen screws
elevating the saddles up and down. I'm talking about the much larger sized allen screw that
intonates the saddle, i.e. moves it back and forth, towards or away from the bridge! A 1/16 would never give you the grip and force to move a saddle under string pressure back and forth, you'd gouge it in no time. A 1/8 hex is slightly too large on mine, a 3/32 slightly to small, so my guess is (possibly confirmed by one singular posting in one Fender bass forum I found) it's a 7/64. Unless someone of you is cruel enough to tell me that further sizes between 3/32 and 1/8 exist.
Knowing you guys' anarchistic penchant for disorder you probably have a further dozen intermediate sizes and Fender chose the rarest one.Will you please now do your home work for me, subito!
If only we had won ze war, I wouldn't have to bother with stuff like this now.
For illustration, in the set below the 1/16 hex is the second-tiniest one while the 7/64 is in the middle range (fifth from the right, fourth from the left) of the smaller ones: