Edmonton, AB
I sent my system 11 mpu out, 10 weeks later I noticed the screws are gone, lost. Could they be metric? Does anyone know exactly what these screws are?
(Topic ID: 173949)
Olympia, WA
Quoted from GRUMPY:I think they are 8/32x 3/8 keps screws.
Yup, they are. I have also used 8-32 x 1/2" long ones in a pinch.
I tried #10-32 pitch but they spin in easy or don't thread in properly, the same Alan screws used for the coil stops because those were the closest that seem to fit but they don't. #8's simply push in the risers' holes.
#8 is good for the WPC Era from 1990 on, this system 11 to be more specific is a High Speed game.
Try a screw from the power supply board mounting. If it is too small, the MPU mounting holes have been hogged out by
a previous owner using something like wood screws. If it fits, then you know the proper screw to use.
Quoted from GRUMPY:Williams games are all the same as far as I know. I believe yours have been damaged by someone.
I have seen a lot of this on my system 11 games. (might have even done it a time or two 
) Leaving you with little choice but to find something that "bites" good and doesn't do additional damage. Use the proper fastener on any of the holes that they still work in.
1 week later
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