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Asian made banjo, allen key size truss rod

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Jan 25, 2020 - 5:55:59 AM
266 posts since 2/26/2012

I did a set up of my cheap awful asian banjo ( i am happy to have it smiley, but i will buy soon a better one devil) but i can not find the proper allen key for the screw to move the truss rod.

It is not in mm and not in inches, i tried with both systems.

 

Does any body knows if it is a special malefic chinese size?

Edited by - Aitor Eneko on 01/25/2020 05:56:33

Jan 25, 2020 - 6:12:11 AM
Players Union Member

rudy

USA

14940 posts since 3/27/2004

It's one or the other, just be sure your wrench fits it!  An improperly sized Allen wrench can quickly render a hex nut or screw's socket unusable, especially if the metal used for the nut is improperly hardened.

Usually you'll find whole numbers for Allen wrench sizes, but occasionally a manufacturer will specify non-common sizes such as 3.5 mm.  You might be missing the wrench you need, but rest assured, there will be a hex wrench made to fit properly.

Does your banjo have a brand?  Sometimes information given will help answer your question more easily.

Jan 25, 2020 - 6:24:18 AM

266 posts since 2/26/2012

i bought this set just for this, and no one is the correct, ones are too small and others too big... is something between 5/32 and 3/16 or 4 and 5 mm

The screw head is perfect, no problem of render hex nut.

The banjo is Savannah. I think it is something intermediate, perhaps in mm 4,5mm??




Edited by - Aitor Eneko on 01/25/2020 06:25:11

Jan 25, 2020 - 6:44:05 AM
Players Union Member

rudy

USA

14940 posts since 3/27/2004

Savannahs are an often seen low end banjo, so I'm sure someone will know the answer to your question.  Hex wrenches do come in 4.5mm size, so that may very well be what you need.

Jan 25, 2020 - 6:52:16 AM

26 posts since 12/6/2016

I have a recording king and the hex looks similar. I got a nice set of t handle hex wrenches from home depot. The set came both English and metric. It had the size I needed.

Jan 25, 2020 - 8:13:14 AM

1160 posts since 2/2/2008

I just checked a couple of Asian necks in the shed and 4mm fitted them. Sounds like you may have a 1/2 size.
Are you trying to lower action by flattening fretboard?

Jan 25, 2020 - 8:18:03 AM

266 posts since 2/26/2012

The action now is low enough, but the neck is very flat.

Jan 25, 2020 - 8:19:25 AM

1160 posts since 2/2/2008

Sometimes when I'm not home with my tools and have an allen key a bit small I flatten a steel coat hanger and scratch it thinner on the concrete if needed then I put that in there and tap the allen key in tight. That can get the job done.

Jan 25, 2020 - 8:25:02 AM
like this

266 posts since 2/26/2012

Yes, there are many tips, but i do not want to damage the screw, it is very inside and the metal is very soft, so if i damage it it will be the finish for that 8th wonder on earth that is my banjo. broken heart

Today i will buy a 4,5 mm allen key. Hope it will b e the correct one.

Jan 26, 2020 - 10:53 AM
likes this

994 posts since 8/7/2017

If you have some bee's wax, roll a small log of it with your palms, then gently push into the hex hole. Might take a few tries, but if you get a good impression, measure it across the flats. If any wax breaks off inside the hole, remove it with a tooth pick.

Edited by - BrooksMT on 01/26/2020 10:53:54

Jan 27, 2020 - 5:19:51 AM

14921 posts since 2/7/2003

Its metric, period

Scott

Jan 27, 2020 - 5:34:59 AM

266 posts since 2/26/2012

thanks,

4,5 mm i think. i just order one, not easy to find one.

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