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  1. #1
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    Default Seeking a Source of M 10 Nuts .

    I'm chasing a small quantity, no more than a dozen, of new M10 x 1.5 nuts that measure 17mm across the flats. I have plenty that measure 16mm and I have found an eBay seller in the UK who has 17mm AF nuts but I was wondering if anyone knew of a local source.

    The nuts need to be either black or unfinished. No stainless, zinc plating or hot dip galvanised finish.

    Bob.

  2. #2
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    Bob, you need nuts made to the metric DIN standard which uses the 17mm head size... As you no doubt know, metric ISO standard head size is 16mm....

    Isn't it wonderful the metric system is so standardised...

    To get them black, you will probably have to look for high tensile nuts eg. http://www.ebay.com/itm/M10-1-50-10m...-/121131705775
    Gold, the colour of choice for the discerning person.

  3. #3
    BobL is offline Member: Blue and white apron brigade
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    Default

    Have you tried Searles Fasteners in Willeton?

  4. #4
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    Default

    Thank you Richard,
    I will confess to being unaware of the difference between the two standards. Pretty poor really given I should know.

    Bob.




  5. #5
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    Quote Originally Posted by BobL View Post
    Have you tried Searles Fasteners in Willeton?
    Just rang them Bob, they only stock ISO.

  6. #6
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    Default

    I'd probably try a euro car or bike dealer and then have to take it dry on the price. 16mm seems to be default now at all the fastener suppliers I use.

    More than likely, they'll be flat or serrated flanged though.

  7. #7
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    Hunch,

    I have found a source in the UK, a quid and a half for ten and a touch more for postage. I had started making three nuts yesterday from some 4140. A lot of rooting around with a not so flash finish.

    Armchair shopping is an easy option.

    Bob.

  8. #8
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    Quote Originally Posted by Anorak Bob View Post
    Thank you Richard,
    I will confess to being unaware of the difference between the two standards. Pretty poor really given I should know.

    Bob.




    Bob,

    - the old German DIN934 standard has been withdrawn long ago
    - the international standard ISO4032 (in Europe EN4032) replaces the old DIN934 standard
    - M10 nuts to ISO4032 differ from DIN934 nuts by:
    * width across flats 16mm instead of 17mm
    * hight 8.4mm instead of 8mm
    * proof load has been increased
    * nominal diameter tolerance has changed
    - for load bearing applications, DIN nuts may not be substituted for ISO nuts. The other way around is ok.

    Its progress. Smaller and lighter nuts with greater strenght. DIN934 nuts are essentially old stock and increasingly harder to get.

  9. #9
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    Quote Originally Posted by Anorak Bob View Post
    Thank you Richard,
    I will confess to being unaware of the difference between the two standards. Pretty poor really given I should know.

    Bob.



    Thanks fr this. No wonder I had to have 3 different spanners to undo an old piece of European machinery
    Kryn

  10. #10
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    Default

    I just checked a pack of Romak M10 high tensile nuts and bolts from Bunnings and both the nut and bolt head are 17mm A/F.
    These come in small plastic packs and are quite good quality although these are zinc coated I think they are also available in black. The zinc is not really a problem as it could easily be stripped off with a weak hydrochloric acid solution.

  11. #11
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    Quote Originally Posted by Techo1 View Post
    I just checked a pack of Romak M10 high tensile nuts and bolts from Bunnings and both the nut and bolt head are 17mm A/F.
    These come in small plastic packs and are quite good quality although these are zinc coated I think they are also available in black. The zinc is not really a problem as it could easily be stripped off with a weak hydrochloric acid solution.
    Thank you Techo,

    How weak is the hydrochloric acid solution? Bunnings sell Bondall acid diluted 320g/l - http://www.bunnings.com.au/-bondall-...acid-_p0960231

    Bob.

  12. #12
    BobL is offline Member: Blue and white apron brigade
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    I wouldn't use HCl but instead use phosphoric acid.

    Once the zinc is dissolved by the Phosphoric, the Phosphoric will react briefly with the iron to make a coating of Iron phosphate which is rust resistant.

    The way to do it would be to suspend the nuts in the Phosphoric and the zinc should react vigorously and dissolve off in a few minutes - once the reaction rate slows down pull the nuts out and have a look. If the Zn is still present dunk them back in for a while longer.

    Once the Zinc is gone just let the nuts air dry and they should be OK to use.

    If HCl is used the nuts will have to be neutralised and coated with something.

  13. #13
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    Quote Originally Posted by BobL View Post
    I wouldn't use HCl but instead use phosphoric acid.

    Once the zinc is dissolved by the Phosphoric, the Phosphoric will react briefly with the iron to make a coating of Iron phosphate which is rust resistant.

    The way to do it would be to suspend the nuts in the Phosphoric and the zinc should react vigorously and dissolve off in a few minutes - once the reaction rate slows down pull the nuts out and have a look. If the Zn is still present dunk them back in for a while longer.

    Once the Zinc is gone just let the nuts air dry and they should be OK to use.

    If HCl is used the nuts will have to be neutralised and coated with something.
    I was hoping you would read my post Bob.

  14. #14
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    I'm no use for suggestions, But it has been an interesting read.

    What is the application that requires you to be so specific?
    …..Live a Quiet Life & Work with your Hands

  15. #15
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    Quote Originally Posted by DSEL74 View Post
    I'm no use for suggestions, But it has been an interesting read.

    What is the application that requires you to be so specific?
    A one spanner fits all on the 13. I had made a couple of Y stops and they have 16mm nuts simply because at the time they didn't have to match anything, the whizzo No. 36 vice has mutilated 17s fastening its swivel base and the stop I made for the vice features a 17mm hex so one size makes sense to me anyway.

    Pipeclay will suggest analism and this time he will be correct. I like originality. Calling me anal because I didn't like the colour apricot on a Maus Gray Deckel was something else.

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