How tightly (and securely) do the modular snap box lids clos

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thomast0001
 
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How tightly (and securely) do the modular snap box lids clos

Post by thomast0001 »

For the various modular snap boxes (eg. products 430, 431, 432, 433, 434), how tightly do the lids close? I would like to use them for some nanobeam parts. The screws, being m1.2, are especially small. Also, how securely do the lids close? The last thing I need to happen is for a lid to suddenly pop open if the box is bumped, with those tiny screws spilled all over the place.

I'm looking at the modular snap boxes because the typical movable divider parts boxes have loose dividers that don't go all the way to the top, tightly against the lid. If such a box is flipped upside down, it'd be a huge mess with the tiny nanobeam parts!

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mikeysklar
 
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Re: How tightly (and securely) do the modular snap box lids

Post by mikeysklar »

These modular snap boxes would be a good solution. They close firmly and do not open accidentally. The parts cannot mix between units or fall out.

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thomast0001
 
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Re: How tightly (and securely) do the modular snap box lids

Post by thomast0001 »

@mikeysklar, thank you for the response! :) It sounds like the boxes could be a good solution for me. However, the other important point is what are the inside dimensions? The listings only provide the outside dimensions. There seems to be a significant sidewall thickness relatively speaking, especially for the smallest boxes, so it's hard to tell what the inside volume is. Do you (or anyone else reading this) have that information? It would be most helpful!

edit: It took a little bit of forensics, but it looks like these are Wen-Tai SMD component storage boxes. I'm currently searching to see if I can find a spec sheet.

edit2: Unfortunately I cannot find any company information for these boxes. The only company I found that is remotely in the industry is www.wentaitek.com, and that's an LED lighting company. There seems to be no mention of storage solutions on that website. The company logo however seems to match what is embossed on the modular snap box lids.

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mikeysklar
 
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Re: How tightly (and securely) do the modular snap box lids

Post by mikeysklar »

#430 and #431 ID: .840" x .700" x .700" (max size)

note: there is a small curve in this cases so there is also a min size of .700" x .700" x .700"

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Re: How tightly (and securely) do the modular snap box lids

Post by thomast0001 »

Thank you for the size information, @mikeysklar. To work with consistent units, converting those to metric that'd be a LxWxH of 21.336mm x 17.78mm x 17.78mm (max). Outside dimensions from the page are 32mm x 25mm x 22mm. That would make the sidewall LxWxH 10.664mm x 7.22mm x 4.22mm. Those thicknesses are likely common across all the products. So LxWxH (max), metric (and inches):
  • Tiny (431): 21.336mm x 17.78mm x 17.78mm (.84" x .7" x .7")
  • Small (432): 21.336mm x 68.78mm x 17.78mm (.84" x 2.71" x .7")
  • Medium (433): 53.336mm x 68.78mm x 17.78mm (2.1" x 2.71" x .7")
  • Large (434): 53.336mm x 118.78mm x 17.78mm (2.1" x 4.67" x .7")
I'll use that as a reference. (If anyone sees an error in my calculations, please let me know. I'll then fix the list above.)

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mikeysklar
 
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Re: How tightly (and securely) do the modular snap box lids

Post by mikeysklar »

Good job. Your numbers are very close to what my calipers are showing. Minor updates on width for #432, #433, #434.

Code: Select all

Tiny (431): 21.336mm x 17.78mm x 17.78mm (.84" x .7" x .7")
Small (432): 21.336mm x 70.51mm x 17.78mm (.84" x 2.775" x .7")
Medium (433): 53.336mm x 70.51mm x 17.78mm (2.1" x 2.775" x .7")
Large (434): 53.336mm x 120.00mm x 17.78mm (2.1" x 47.25" x .7")

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thomast0001
 
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Re: How tightly (and securely) do the modular snap box lids

Post by thomast0001 »

Thank you for double-checking my numbers. :) Note that the width in your table for 434 is off by ten (47.25"). That I believe is supposed to be 4.725". Actually, my conversion calculator converts 120mm to 4.724" (rounding down, since it's actually 4.724409448824..., assuming my calculator is correct -- that's not necessarily a given! ;). I won't quibble over a hundredth of an inch. Just making a note. :)

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Re: How tightly (and securely) do the modular snap box lids

Post by mikeysklar »

Good eye. My bad being an order magnitude off.

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thomast0001
 
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Re: How tightly (and securely) do the modular snap box lids

Post by thomast0001 »

I mentioned in my response containing my calculations that I'd correct them if anyone saw something wrong. instead I'll leave my numbers as-is, and consider @mikeysklar's actual measurements the final answer. I think it's good to have both sets of numbers, one based on theory (from calculations) and one on practice (actual measurement). It's interesting to see how those can diverge. :)

Thank you again for taking those measurements! I think this will help everyone wanting to use these boxes know what can actually fit in them.

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