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  1. 67bonnie

    thread locker and zinc-flake coatings

    The coatings that i am referring to are not hot dip galvanized. Geomet, Magni, and Delta MKS are some of the names that I am familiar with. I think that some might have a topcoat that contains teflon for reducing the coefficient of friction, but I do not think that all have Teflon added. If they...
  2. 67bonnie

    thread locker and zinc-flake coatings

    Are anerobic thread locking compounds effective when used with fasteners that have dip-spin or spray applied zinc-flake coatings for corrosion resistance?
  3. 67bonnie

    HV bolts nuts and washers

    Can anyone explain to me what the differences are between standard metric grade 10.9 bolts and bolts marked as "10.9 HV"? I found the EN 14399 standard that seems to suggest that these fasteners are designed for "preloaded joints", but that makes no sense to me because all bolted joints are...
  4. 67bonnie

    zinc/aluminum flake dip-spin applied coatings

    Does anyone know where (or if) I can find salt spray test data that compares,side-by-side in the same test, the corrosion resistance of zinc/aluminum flake coating systems from the various manufacturers like Doerken Delta MKS, Magni, Geomet,Sermagard, Whitford, Zintek, Empigard, etc?
  5. 67bonnie

    clamp load - bolt vs. stud and nut

    Does anyone out there know if there is any difference in the clamp load generated in a joint using a stud and nut, versus the same joint using a capscrew?
  6. 67bonnie

    non-hexavalent chrome coatings

    does anyone know where i can find a ranking of the costs of the non- hexavalent chrome coatings that are used for fasteners. I found this very helpful posting with a table of the coatings ranked by corrosion resistance, but not cost. thread332-189454. can I assume that the least effective are...

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