ASTM F912 Set Screws Price - ASTM A320 L7 Heavy Hex Bolts – Dingshen Metalworks

ASTM A320 L7 A193 B7 Dual Certified Heavy Hex Bolts Standard: ASME/ANSI B18.2.1, ASME/ANSI B18.2.3.7M Various types of head are also available Inch Size: 1/2”-2.3/4” with various lengths Metric Size: 1/2-M72 with various lengths Grade: ASTM A320 L7, ASTM A193 B7 Finish: Black Oxide, Zinc Plated, Zinc Nickel Plated, PTFE etc. Packing: Bulk about 25 kgs each carton, 36 cartons each pallet 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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    I made this mount trying not to drill holes in the helmet and with the possibility to use it on both of my helmets ( mountain bike and ski).
    I used a segment from a broken fishing rod made from fiberglass. You can use other materials (pvc, aluminium, carbon) .
    For the camera I used the handlebar mount and for the counterweight I used pieces of lead wheel weights used for calibrating the rims. The counterweights are hooked together with plastic zip cuffs and mounted on the bar with a hose clamp.
    I drilled holes in the bar at about 1/3 distance from the counterweights because is it is short and for the camera to be at a greater distance. You can find easily the center weight by sliding the counterweight on the bar. It’s not crucial to drill the holes so precise.
    For the rotating part I used a swivel caster wheel with top plate, the smallest and cheapest that I could find (2$). In the middle of the top plate I fixed a nut with european standard thread with a thin metal plate and 4 small nuts and bolts. First I wanted to put also some glue, but it wasn’t needed anymore because the nut was fixed very tight.
    A friend of mine made for me a bolt on a lathe machine with 2 different threads: one half with standard european thread to be screwed in the nut from the top plate of the rotating part, and the other part with thread for tripod. I couldn’t find anywhere a bolt or nut with thread for tripods.
    This two thread bolt is screwed in the tripod adapter put upside down , which is hooked with an segment from the 3-way pivot arm that comes with the camera. And this segment is hooked to the flat quick-release mount.
    The trick is at fixing together the pivot arm and the tripod adapter. I removed the nut from the tripod adapter. Then I took only the plastic handle from a short bolt used at the 3-way pivot arm and used with a long bold used for fixing the camera housing. And a washer, and that’s it.
    Feel free to leave a message if you have any questions.



    Learn the basics of Autodesk Inventor by making a hex head cap screw. This basic screw can be created using several of the essential commands. Watch and work alongside this video to learn how to create a screw in Autodesk Inventor.

    Commands needed:
    - 2D Sketch
    - Extrude (Join and Cut)
    - Thread
    - Fillet