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Some Europeans questions about UNC screws and aluminum Hammond

post #1 of 9
Thread Starter 

I am looking for nice button socket screws for Hammond 1455 aluminum enclosures. So far I use 3.5mm self tapping screws for metal. This works, but self tapping screws are usually with ugly heads.

Hammond datasheet say #6 screws, so I find thees nice black 6-32 screws:

http://www.fastener-express.com/6-32-x-12-button-head-cap-screw-stainless-black-oxide-qty-100.aspx

 

So, my question are:

 

1.  are thees 6-32 the same #6 ? 

 

2. Can I use thees screws as self tapping in aluminum Hammond, or I need special tapping tool?

 

3.  And last - hex socket size is 5/64, I calculate, this is 1.953mm. Can metric 2mm key fit? Anyone trying in real life?

post #2 of 9

1. Yes.

2. Try it once without tapping the hole. When the screw breaks off in the case you will know to do it the right way the next time. ;)

3.  2mm is to big.

post #3 of 9
Thread Starter 

Thanks MisterX, then I am going to order right tools.

 

I use 3mm tick front panels, are 3/8 screws long enough? After 3mm panel 6.3mm is left for Hammond's extruded canal.

Is it enough for trusty long life using with regular battery changing, or better ordering 1/2 screws? What is your experience?

post #4 of 9

Hi Zigis,

 

You can find out at the shop (like Depo or better Delve2) the size and look.
 

Rgrds.

post #5 of 9
Thread Starter 

Welcome to forum, radjuga!

 

Of course I know those shops, perfect if you need to just screw something, bit harder if you care for look, better then average. And of course all screws only metric, no "american" screws.

Anyway, I find screws in US, tapping tool in China and 5/64 hex key somewhere else. I am really big fan of globalization :)

post #6 of 9

If you're going to use #6-32 UNC screw with a hammond enclosure, you can simply tap the holes with the "stock" hammond screw first. smily_headphones1.gif

 

The hammond enclosures come with 6-32 taptites, these are a self tapping screw that cuts a standard thread, so any 6-32 screw of same length or shorter, already has a thread cut for it without using a standalone tap.

 

Easier than trying to cut a thread with a socket screw, also easier than using an regular 3-flute tap as these don't work so well in non-round holes.

post #7 of 9
Quote:
Originally Posted by Zigis View Post

Welcome to forum, radjuga!

 

Of course I know those shops, perfect if you need to just screw something, bit harder if you care for look, better then average. And of course all screws only metric, no "american" screws.

Anyway, I find screws in US, tapping tool in China and 5/64 hex key somewhere else. I am really big fan of globalization :)

 



blink.gif I'm impressed or so

 

Anyway good luck wink_face.gif

post #8 of 9
Thread Starter 
Quote:
Originally Posted by DingoSmuggler View Post

If you're going to use #6-32 UNC screw with a hammond enclosure, you can simply tap the holes with the "stock" hammond screw first. smily_headphones1.gif

 

The hammond enclosures come with 6-32 taptites, these are a self tapping screw that cuts a standard thread, so any 6-32 screw of same length or shorter, already has a thread cut for it without using a standalone tap.

 

Easier than trying to cut a thread with a socket screw, also easier than using an regular 3-flute tap as these don't work so well in non-round holes.

Thanks for practical hints, I would not imagined, taping tool work not so well in thees holes.

Now I need to find screws with length - original screws length + 3mm (my front panel thickness)

 

edit   Find it - 6-32 x 3/8 looks like perfect for my needs.


Edited by Zigis - 7/5/13 at 3:15pm
post #9 of 9
Thread Starter 

Today I receive screws and 5/64 hex keys.

 

At least in thees screws

http://www.fastener-express.com/6-32-x-12-button-head-cap-screw-stainless-black-oxide-qty-100.aspx

 

5/64 and metric 2mm hex keys fit and work similar good.

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