Is this one ever going to be back in stock? Seems like that’s the only site that sells it too.
It might never. Some stock pages hang around for years on end without any updates or resupply. 
I’m glad to see threads like this pop up. I have collected several variations of different side knobs over the but its really hard to say what is 100% correct. Heathkit side knobs did come in dark green but also black. It would be hard to say what was used on screen. I have found variations with blue dots, black dots, no dots, skirted and unskirted, green and black, and all have identical measurement specs.
The silver front knob has been the one I have struggled with. The lack of clear reference has had me second guessing myself for years. I guess that’s the part of the hunt we all enjoy in this hobby.
Wondering what the recommended way to paint the top of the silver knob black is.
Some painter’s tape, or a delicate hand with a modelling brush should do the trick.
You might even get the look with a permanent marker.
So the black Alco knob (KU4025B 1/8) is seemingly impossible to find, it doesn’t look like it’s even produced anymore from what I can tell from the TE Connectivity website.
BUT! It looks like they produce essentially the same knob, but with a skirt, part KU402B1/8. Dimensions of the knob itself seem to be identical to the TEDSS listing, but not sure how easy to remove the skirt will be. I assume it’ll be part of the aluminium knob, so could be a bit tricky.
Also worth mentioning most places only seem to stock it in 2000+ MOQ, but Swatee Electronics sell them individually, but with a £22 shipping cost! Now trying to find one that’s not £20+ with shipping to get in the UK…
I got all my front knobs from a seller on ebay. But that doesn’t help you if all you need it the black one.
I got the silver knob and sliders pretty cheaply from a UK supplier, so don’t really want to have to get a whole set just for that one knob, but thanks!
Where did you get the slider knobs from in the UK? Thats what I’m trying to find at the moment. Thanks
I ended up getting some that were close-ish to what I think the dimensions should be from RS Components, here. I found some that seemed like they might be slightly better dimensions (Cliff slider CP3290, here), but despite being a UK company they have no UK stockists of them, and shipping from Germany was absurd, so I settled for the RS ones. The “correct” sizing was based off a Facebook thread and the casts that Nickatron used to offer.