For those without their own machine shop tools I might have found something useful for making a diode array, if I cant use them for that then I can at least flip these big ones over and use the flat backside with no holes.
One of these is a Parker VAN22-5003-04 with 8mm holes & has no threading, could be drilled/tapped to m9.05 or 12mm.
The other longer ones are by Siebe Pneumatics 8MMC501M-0801 and have 7mm unthreaded holes, these two types do not have holes that go thru the back.
The holes are staggered 1.5mm.
http://www.parker.com/Literature/Lit...-VS_inline.pdf
In my hand two holed / 3 way valve pieces: PS2966P by PARKER, these have 11.2mm inside thread diameter, they MIGHT not work out as well as the above because I will still have some thread left if I drill to 12mm ID.
The holes are staggered 1.5mm.
http://www.plccenter.com/Buy/PARKER/PS2966P
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