Yamaha YBB-103 thread size?

Tubajug · Post by **Tubajug** » Mon Sep 23, 2013 11:59 am

Do any of you techs know off-hand what the thread size is on the screws that hold the valve section on? I've got one with some heads that are starting to strip. I see someone has replaced a few already with what look like "off the rack" screws from a hardware store. Anybody know the thread size off-hand so I can pick up some replacements? Thanks!

Dan Schultz · Post by **Dan Schultz** » Mon Sep 23, 2013 1:15 pm

Those brace screws should be 3 x .5mm. You can probably pick them up at Ace Hardware. Buy brass or stainless steel ones.

I've found #4-40 threads substituted. Close, but not correct.

Pick up one 3 x .5mm screw and if it doesn't fit well... someone has probably used a #4-40 screw.

The body diameter of these two screws are within a few thousanths.

Tubajug · Post by **Tubajug** » Mon Sep 23, 2013 11:18 pm

Thanks Dan! I'll see what I can find! That's exactly what I needed to know.

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Yamaha YBB-103 thread size?

Yamaha YBB-103 thread size?

Re: Yamaha YBB-103 thread size?

Re: Yamaha YBB-103 thread size?