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Old 03-03-2024, 11:01 AM
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Default Cap and countersunk?!?

I’m looking for 1/4-20 2.25” machine screws that are preferably countersunk but not Phillips. Preferably countersunk for these hinges but I want to use an Allen key rather than a Philips.
Anyone know what they are called or do they even make such a thing? I haven’t been able to find them.
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  #2  
Old 03-03-2024, 11:17 AM
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Flat head socket cap screw
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  #3  
Old 03-03-2024, 11:43 AM
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I see those but there aren’t button head.
I assume ther don’t make them?
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  #4  
Old 03-03-2024, 12:13 PM
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Here you go https://www.fastenal.com/product/Fas...egoryId=600043
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Old 03-03-2024, 12:26 PM
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These are button head. I’m looking for button head AND countersunk. I guess they don’t make them.
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Old 03-03-2024, 12:26 PM
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I got a little bit closer searching for "security machine screws" but never could narrow it down to the exact size. It's not hex or torx, but the one-way type where your driver can only tighten--the kind used on bathroom stalls is the best way I can explain 'em . Another version had the two little pin-holes, but they seemed to only be in the smaller sizes.

They do offer a whole lot more in the flat head version. Maybe there is some sort of extra difficulty in making the domed head ones.

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Old 03-03-2024, 01:00 PM
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Yea I came across those security screwed but I rather not use them. I suppose they don’t make them for a reason. Presumably due to the difficulty making them. I definitely want countersunk but don’t want Philips so I can tighten them easier and so they don’t look so cheap I suppose I’ll just have to use the flatheads
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  #8  
Old 03-03-2024, 01:08 PM
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McMaster doesn't list the specific head type that you want so you'll have to trim button heads on a lathe.

Button Heads

Oval Heads
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  #9  
Old 03-03-2024, 01:50 PM
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mscdirect.com is also an option. I did a quick search of 1/4-20 screw and this is a screen shot. I'm pretty sure I've seen little caps that push into the hex portion of the screw if that is what you are looking for. By "button-head" do you mean PANHEAD?
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  #10  
Old 03-03-2024, 02:56 PM
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Looking for these 2 bolts in one bolt. Countersink under the head, button head on the top
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