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Black Watch Arsenal


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  1. #1
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    Help with 6-40 Countersunk UNF screws

    These appear to be a little like hen's teeth to source. I'm after 3 only 3/8" or longer.

    Can anyone help?

    Please flick me a PM if you can.
    Thanks

  2. #2
    ebf
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    Easy peasy - workshopinnovation.co.nz

    Look in the gunsmithing section
    Viva la Howa ! R.I.P. Toby
    Black rifles matter...

  3. #3
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    Quote Originally Posted by NZ_noddy View Post
    These appear to be a little like hen's teeth to source. I'm after 3 only 3/8" or longer.

    Can anyone help?

    Please flick me a PM if you can.
    Thanks
    Are you sure about the size @NZ_noddy?

    6-48 and 8-40 are the old scope mount sizes

  4. #4
    ebf
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    6-40 is fairly common for rings and rails, probably more so than 6-48

    both are available at workshopinnovation

    they also sell taps - good idea to clean out the threads on tiny stuff like this, but you need to make VERY sure of the thread specs...
    Viva la Howa ! R.I.P. Toby
    Black rifles matter...

  5. #5
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    I'm definite about the size.
    @ebf they don't have csk in 6-40 otherwise would have got them from Robert :-(

  6. #6
    ebf
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    @NZ_noddy The oval head ones have a conical bearing surface.

    https://www.workshopinnovation.co.nz...rewsSocketHead

    You can get those in 1/4 or 3/8 lengths. And the bonus is they are not slotted - I HATE slotted screws
    Viva la Howa ! R.I.P. Toby
    Black rifles matter...

  7. #7
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    Thanks. Worth a try so I've ordered some.

    Thanks for your help.

 

 

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