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geekhack Community => Keyboards => Topic started by: vivalarevolución on Thu, 13 February 2014, 19:36:36
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My Model F came with two screws that actually were Model M screws. I'm wondering if anybody knows the exact screw size for screws that hold together the case of the Model F.
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Aren't they the same? 7/32"
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Aren't they the same? 7/32"
Model F AT is 1/4"
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Oops, sorry for the Model F 122. They are the same head size as the Model M, but the Model F screws have more threads. The Model M screws will not stay tight in a Model F case.
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Oops, sorry for the Model F 122. They are the same head size as the Model M, but the Model F screws have more threads. The Model M screws will not stay tight in a Model F case.
That makes sense. Like everything on the Model M, they are cheaped-down and simple compared to the F. Model M screws just go into plastic and need rough threads, while the F has metal sleeves inset into plastic stems to receive machine screws.
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Oops, sorry for the Model F 122. They are the same head size as the Model M, but the Model F screws have more threads. The Model M screws will not stay tight in a Model F case.
That makes sense. Like everything on the Model M, they are cheaped-down and simple compared to the F. Model M screws just go into plastic and need rough threads, while the F has metal sleeves inset into plastic stems to receive machine screws.
Yea, and those Model M screws strip the metal sleeves on Model F case. I'm worried that the correct screws will have trouble sitting correctly, if I ever find the right ones.
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The screws are metric, amazingly.
M4 - .7 x 14mm with an undersized hex head and flange. Home Depot sells M4-.7x12mm in either pan head Philips screw with a head about the same size as the original flange, or a hex bolt with a much larger head. The 12mm is a bit shorter than the original but should work OK.
I am glad that you brought this up, I needed a couple myself.
With luck, the new threads will re-mould the insides of the sleeves, at least partially.
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The screws are metric, amazingly.
M4 - .7 x 14mm with an undersized hex head and flange. Home Depot sells M4-.7x12mm in either pan head Philips screw with a head about the same size as the original flange, or a hex bolt with a much larger head. The 12mm is a bit shorter than the original but should work OK.
I am glad that you brought this up, I needed a couple myself.
With luck, the new threads will re-mould the insides of the sleeves, at least partially.
Thanks. I would shoot out to the hardware store right now, but it's current Snowpocalypse, Part 4, out there right now, so I will wait until tomorrow.
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If you're buying new bolts that don't quite match the originals, I'd just get some M4 x 14mm cap screws from McMaster. Something like ~$8 for 50 in 18-8 stainless steel. They've got some nice black-oxide coated ones as well.
I can't imagine that the threads are damaged to the point that chasing them with a tap won't clean them up.
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Necro post.
4704 boards also use M4 x.07 screws on the case.