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FDP Forum / Fender Bass Guitars and Bass Amps / fender thumb rest screws



Dec 21st, 2016 10:37 AM   Edit   Profile  


do any of you know what size screws i should get to attach a thumb rest to an old musicmaster bass? the holes are already there. just need replacements.

thank you.

Te 52

Laws of Physics

strictly enforced
Dec 21st, 2016 07:00 PM   Edit   Profile  

I don't have the exact answer, but here's how I would proceed:

Try dropping drill bits through the hole in the thumbrest until you find the largest one that will go through without binding. Convert that fractional drill diameter to thousandths of an inch (e.g., 5/32"=0.156").

Then use a table (link) to find the closest matching wood screw size.

The length you should be able to estimate by sticking a toothpick into the hole in the body to see how much goes in and adding the amount of screw that is in the thumbrest. Round the figure down to the nearest quarter inch and you should be good.

screw size table

(This message was last edited by Te 52 at 09:01 PM, Dec 21st, 2016)



Dec 21st, 2016 10:29 PM   Edit   Profile  


thank you. i'll give it a go.

uncle stack-knob
Contributing Member

united kingdom

Dec 30th, 2016 04:07 AM   Edit   Profile  

Hello Huck.
Better late than never.

The Fender parts catalogue for 1968 shows bass thumb rest screws as:
part number 015610 "screw sheet metal oval head phillips #5 - 1 inch steel nickel plate.

Out of total anorak interest,the Precision bass at that point is shown as previously using a #6 oval head wood screw by one inch,but being superceded by the #5.
All of this appears to make little sense or matter that much until you compare the actual finger rests and discover that the holes in them changed in size over the years,as reflected by the note above.




Dec 30th, 2016 09:37 PM   Edit   Profile  

super. thank you. i had planned on taking the bass to lowe's tomorrow to see if i could figure it out.

and to anyone else who's pitched in with advice over the last few years, thank you, too. i just made a contribution to the site for the first time. if you're reading this and haven't contributed, please consider doing so. this is the first and best place i've found for gear info.

Danny Nader


You should have been there!
Jan 2nd, 2017 12:06 PM   Edit   Profile  

If you have the thumb rest why take the bass? Just take the thumb rest. If it fits the hole properly, then it needs to be an inch long.

As Uncle sez, oval head phillips, #5 or 6.


FDP Forum / Fender Bass Guitars and Bass Amps / fender thumb rest screws

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