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    Default machine nuts

    Does anyone know where I can buy a 9/16 machine nut. These nuts have a tight tolerance. Thanks Craig

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    Quote Originally Posted by msilhunter1 View Post
    Does anyone know where I can buy a 9/16 machine nut. These nuts have a tight tolerance. Thanks Craig
    I think McMaster Carr sells 9/16-12 and 9/16-18 in a few grades. These are standard nuts - not Heavy Hex

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    Quote Originally Posted by msilhunter1 View Post
    Does anyone know where I can buy a 9/16 machine nut. These nuts have a tight tolerance. Thanks Craig
    First, read-up on "classes of fit". Be aware the mating parts may not be identical as to class - there can be combinations:

    Can you explain "Thread Class"? - MW Industries ASM

    Only after you are clear which pairing you need will searching reduce risk of disappointment.

    Might be wise to purchase more than one example and try them.

    In this size, that should be cheaper than trying to get measuring gear onto the goods - then probably still getting it wrong!



    PS: Loctite exists.

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    There might be Mil-Standard 9/16 nuts, perhaps old boys originally meant for radial engines and the like. Some searches on aircraft supply sites might help.

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    Quote Originally Posted by msilhunter1 View Post
    Does anyone know where I can buy a 9/16 machine nut. These nuts have a tight tolerance. Thanks Craig
    A question that vague might easily be asking about nuts that require a precisely sized 9/16" wrench. Seems like the pitch would be mentioned if the thread diameter was meant. Or maybe he does not know about pitches.

    Larry

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    I think the question is valid. Look at the nuts, and bolts, on any pre 1970 machine tool. They typically have a washer face, a slightly domed top, and they look like they were turned on a screw machine rather than punched out in a single wack like generic Home Depot hardware. I do not know where to buy hardware like that. McMaster doesn’t have it.


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    Quote Originally Posted by adh2000 View Post
    I think the question is valid. Look at the nuts, and bolts, on any pre 1970 machine tool. They typically have a washer face, a slightly domed top, and they look like they were turned on a screw machine rather than punched out in a single wack like generic Home Depot hardware. I do not know where to buy hardware like that. McMaster doesn’t have it.


    Sent from my iPhone using Tapatalk
    The flange nuts used for clamping, which are available from McMaster, would seem like an option. 9/16 is not available ( in this style) but you could go oversize and install a insert. I’ve made acme clamping nuts this way.


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    Earnest Machine Co out of Rocky River, Ohio supplies 9/16-18 flange/machine nuts, if that is in fact what OP is looking for.

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    msilhunter1 --

    If you need a few dozen, I suggest you call a "tooling component" maker. It's been a long time, but years ago Northwestern Tool made a few dozen special flange nuts for me . . . two-day turnaround, and less than US$ 5 apiece if I remember correctly.

    Northwestern Tools | Spring and Ball Plungers, Tooling Components and More

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    Any Aircraft hardware supplier will have good quality nuts made to AN, MS or NAS standard.
    http://skybolt.com/wp-content/upload...-12-7-2017.pdf

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    Take a standard hex nut, thread it onto a freshly machine cut thread with a tight fit to hold it with out turning. Face off slightly to square it up to the thread, and take a slight cut to create the washer effect on the nut and you have a machine hex nut. I remember doing this a time or two over the years, it works!
    BTW- if you need some 9/16- 18 fine thread nuts, I have about 40 of them here I'll be gladly to sell you for what I have tied up in them. They are standard zinc plated but are not "machined" hex nuts, but I can fix that for you too if you like. Ken

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    If you want extra thickness nuts in HT,first place I look is the local speed shop.......wheel stud nuts for various wheels ,all $1 each.......my kind of price.

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    "BTW- if you need some 9/16- 18 fine thread nuts,"

    I hope the OP doesn't need 9/16-18 coarse thread nuts. Guess he'd be SOL.

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    When I first read the title, I wasn’t sure if you were asking about fasteners. This forum is full of machine nuts

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    The best supplier for hard ware that I have found is Midstates. They seem so be able to find anything and usually have it in stock somewhere. Hightly recommended


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