Hongdui HD-TB01 Miter Gauge - bolt size?

[benhen31]

Hi all,

I have this excellent Hongdui aftermarket mitre gauge & fence, but today I lost the small black allen key bolt that holds the circle on the end that keeps the mitre bar in the T-slot (Circled on pic). I can't find any info on what size this bolt should be to source a replacement. It's pretty small! The oproduct listing has lots of dimensions on it, but not of the bolt itself.

Anyone have this that can shed some light for me?

 

[Sideways]

Just from the look of it, try an M4 and an M5 machine screw.
When you know what the thread is, you can get a countersunk one in a short length like 12 or 16mm that you can cut and file down to length.
I'd get a replacement in stainless steel with a torx socket in place of the hex socket. I think torx are harder to strip when you are tightening them.
These are cheap and easy to source on ebay but it all starts with testing the thread for size.

 

[Amplidyne]

Isn't the other one a bit nearer the body of the gauge the same size and type?
Otherwise, what Sideways says.