Matte black ss screws - without changing their dimensions?
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    Default Matte black ss screws - without changing their dimensions?

    Does anyone have any experience of matte black screw finishes which aren't painted?
    They need to be high-precision for our machines, so they can't be painted.

    Thank you

    Roger

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    Black oxide

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    Why are you starting a new thread on the same subject ?
    How often should chemical blackened screws be oiled to prolong their finish?

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    I'm hoping to draw from other people's experience to find the best solution for our customers.

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    Quote Originally Posted by RogerCrossley View Post
    I'm hoping to draw from other people's experience to find the best solution for our customers.
    So what is the problem with the black screws you are using?

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    I'd like to know which coating stays matte black the longest and if anyone has any experience of electroplating vs black oxide coatings for example. I've seen another discussion on the same topic since starting this thread: Better quality finish for small screws than black oxide?

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    info on black oxide:
    Black Oxide Basics

    -Marty-

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    might consider" Hauck Heat Treatment - Nitrotec
    The lowest temp they can run it at is 1100F

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    Blackfast Chemicals 02083397370

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    Quote Originally Posted by camscan View Post
    Blackfast Chemicals 02083397370
    You beat me to it, they are often mentioned in the trade magazines.


    Stainless steel blacking chemicals


    https://irp-cdn.multiscreensite.com/...20BROCHURE.pdf

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    Black oxide is a conversion coating so it doesn't affect dimensions. You could buy screws already blackened by this process, such as AccuBlack screws. I'm pretty sure that electroplating is not as matte as black oxide, but I'm not 100% sure.

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