Screws for Optimus 111 stove

Question regarding
Optimus 111 stove

the screws which hold in place the heat shield on the fuel tank and are ar the side of the fuel tank …. What size are these screws . Are they brass or steel Screws . the pictures show screws and fitting the fuel tank .

but what are size called
And I are they brass or steel

 

Hi Jim,

I can’t help with thread sizing (I suspect others can) but they are attracted to a magnet, which in my limited knowledge makes them steel.

Base camp sell them (used) as part 2530.


-R

 

Thanks for the reply
I just can’t seem to see them anywhere online for sale
And I think if we’re online they be old size measurment British standard
But deffinetly not M6 size

 

Optimus Spares Price List

 

could it be 1/4" Whitworth,

 

Thanks for the info on screws , good to know where to buy and look for items ,
But I also think little costly for 1 screw and postage , however if needed it have to be …

 

I counted 9 threads on the screw so I keep serching for something same .

 

If the grid the screws are on is 1/2 inch . They are a Round head machine screw . Swedish manufacture so more than likely Metric . probably 6 , 7 , or 8mm diameter , measure to be sure . Metric machine screws can be .75 mm 1.0 mm or 1.25 mm pitch in those diameters . Need a thread pitch gauge to measure , or use one of the old screws as a pitch gauge . Fastener shop should be able to supply in about any material you want . Good luck in your search .

 

it should be withworth 1/4

 

They are 1/4 whitworth, make sure you do not make them too long as they will punch through your tank when tightening
Rgds Tony