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Black Anodized M4 Hex Nut Supply

05/06/2012 7:20 PM

Anyone know where I can buy black anodised M4 hexagon full nuts, not Nylock or other lock nuts. Our local fastener supplier has drawn a blank & they are usually good. I've mailed a company, fastener-express, in the US as they were the most likely I could find on-line.

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#1

Re: Black anodised M4 hex nut supply

05/06/2012 7:40 PM

Did you try here?

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#2
In reply to #1

Re: Black anodised M4 hex nut supply

05/07/2012 1:46 PM

Yes, tried there & KellySearch without luck. The company I mailed in the US have also replied to say that they only supply Nylock nuts black anodised.

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#3
In reply to #2

Re: Black anodised M4 hex nut supply

05/07/2012 2:16 PM

Last night I was able to find a finish option on the Global Spec search engine for black oxide finish of metric nuts but not black anodised. An anodised finish implies to me aluminum metal. Did you search also for a black oxide finish?

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#7
In reply to #3

Re: Black anodised M4 hex nut supply

05/08/2012 4:21 AM

We've used black oxide or black japanned in the past but they tend to rust after a while. I was looking for black anodised aluminium, the aluminium nuts are easy to find but not black anodised.

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#10
In reply to #7

Re: Black anodised M4 hex nut supply

05/08/2012 8:53 AM

If you can find the aluminium nuts easily, why not buy a suffcient quantity and have them anodized? I'd be surprised if that was more expensive than finding specialised fasteners.

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#15
In reply to #10

Re: Black anodised M4 hex nut supply

05/09/2012 4:25 AM

That's an option, I was just hoping to find them already done.

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#4

Re: Black Anodized M4 Hex Nut Supply

05/07/2012 2:30 PM

If anodization is the same as black oxide coating, that is a common coating here. it is available from any fastener supplier such as Fastenal, Mc Master-Carr, etc. Available in SAe and metric. This coating helps prevent rust and is used for nuts, studs and blocks for milling machine setups.

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#13
In reply to #4

Re: Black Anodized M4 Hex Nut Supply

05/08/2012 10:16 PM

Black Oxide chemical process for Steel, Anodize chemical process used for Aluminum.

When I worked in R&D, the Anodize penetration into the aluminum was equal to the buildup on the outside surface. I believe that applies to the "Hard Anodize" process.

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#5

Re: Black Anodized M4 Hex Nut Supply

05/07/2012 4:00 PM

i think we're mixing terms? Aluminum is anodized. Steel is black oxide coated. Some steels may be "anodized", I guess but not sure what the correct terms are.

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#8
In reply to #5

Re: Black Anodized M4 Hex Nut Supply

05/08/2012 4:25 AM

Anodising only applies to aluminium. I have seen a process to coat steel in aluminium then anodise it but that's a bit exotic. I think the process is ivadizing.

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Commentator

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#6

Re: Black Anodized M4 Hex Nut Supply

05/08/2012 1:44 AM

This is what McMaster-Carr has:
Metric Hex Nuts-DIN 934

All of these metric hex nuts have a Class 6H thread fit and meet DIN 934, except those made from Bumax 88 stainless steel and nylon 6/6.

For technical drawings and 3-D models, click on a part number.

Thread
Size
Pitch,
mm
Width,
mm
Height,
mm
Pkg.
Qty.
Per
Pkg.
*Not rated for hardness.

Hope this helps.
Black-Finish Class 10 Steel
M40.773.2100

90685A039

$9.68
Black-Oxide 18-8 Stainless Steel
M40.773.2100

98676A200*

8.08
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#9

Re: Black Anodized M4 Hex Nut Supply

05/08/2012 8:32 AM

Is Australia to far? Price: AUD $0.25

http://www.thekoolroom.com/product/m4-hex-nut-black/

M4 Black Nut use in conjunction with M4 screws for a secure fit for any mod or installation project.

  • Head Style: Socket Head Cap
  • Material Type: GR 304 S/S Black
  • Finish: Anodized Black

System of Measurement: Metric

  • Metric Thread Size: M4
  • Metric Thread - Height: 2mm
  • Head Size: 7mm socket or wrench needed
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Guru
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#14
In reply to #9

Re: Black Anodized M4 Hex Nut Supply

05/09/2012 4:24 AM

That one confuses me. The spec says it is made from 304 stainless & anodised black. That just doesn't work.

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Guru

Join Date: Jun 2006
Location: Ottawa Canada
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#11

Re: Black Anodized M4 Hex Nut Supply

05/08/2012 9:35 AM

Bring them into my shop in Ottawa.

I will blacken them for you. If they are steel, they will get black oxided. If they are aluminum, they will get anodized.

OTOH, there hundred of anodyzing shops closer to you than to me!

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#12

Re: Black Anodized M4 Hex Nut Supply

05/08/2012 10:30 AM

try Misumi CBALNB4

http://www.misumiusa.com/CategoryImages/Metric_2009_pdf/p1349.pdf

baaa, it looks like a discontinued part

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Guru
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#16

Re: Black Anodized M4 Hex Nut Supply

05/10/2012 4:13 AM

I think I have to bite the bullet on this one & get some parts made. One advantage is that I can make a long blind nut that will cover the stud as well so it's not all bad.

Thanks for all the comments.

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