Wholesale price stable quality Hook Bolts for Germany Manufacturers
A range of hook bolts, used in the roofing industry for fixing cladding and roofing panels to steel frames. Hook bolts, also commonly known as 'J' bolts and supplied with nuts.  Inch Thread Size: 1/4"-4" with various lengths Metric Thread Size: M6-100 with various lengths Material Grade: Carbon Steel, Alloy Steel, and Stainless Steel covers ASTM F1554, A307, A449, A354, A193, A320, F593, ISO 898-1 4.8, 6.8, 8.8, 10.9 Finish: Plain, Black Oxide, Zinc Plated, Hot Dipped Galvanized, and so on. Packing: Bulk about 25 kgs each carton, 36 cartons each pallet. Or, comply with your requirement. Advantage: High Quality and Strict Quality Control, Competitive price,Timely delivery; Technical support, Supply Test Reports Please feel free to contact us for more details.  
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    Testing laboratory for fastening technology. Tensile and proof load testing.

    Prüf- und Messkompetenz von Verbindungselementen. Zug- und Prüflastprüfung.



    Re-upload after accidentally deleting this video. :-(

    NOTE: The set screws mentioned in the video are incorrect. These are the actual set screws I used, verified in the shop, with a thread gage.

    Nonmarring Flat Point Set Screw, 18-8 Stainless Steel, M8 Size, 10mm Length, 1.25mm Pitch
    McMaster-Carr #92605A141

    https://www.mcmaster.com/mv1467920594/#catalog/92605A141

    Nonmarring Flat Point Socket Set Screw, Alloy Steel, M10 Size, 12mm Length, 1.5mm Pitch
    McMaster-Carr #93245A156

    https://www.mcmaster.com/mv1467920594/#catalog/93245A156

    4mm hex key (McMaster-Carr #71285A175):

    https://www.mcmaster.com/mv1467920594/#catalog/71285A175

    5mm hex key (McMaster-Carr #71285A177):

    https://www.mcmaster.com/mv1467920594/#catalog/71285A177

    6mm hex key (McMaster-Carr #7289A17):

    https://www.mcmaster.com/mv1467920594/#catalog/7289A17

    Suburban Tools video showing how to use a boring head: