8 Year Exporter BS7419 Square Square Holding Down Bolts for Los Angeles Manufacturer

BS 7419 Square Head Square Neck Holding Down Bolts Standard: BS 7419 Metric Szie: M16-M64 with various lengths Material Grade: ISO 898-1 4.8, 8.8 Finish: Plain, Black Oxide, Zinc Plated, Hot Dipped Galvanized and so on 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.

  • 8 Year Exporter BS7419 Square Square Holding Down Bolts for Los Angeles Manufacturer Related Video:



    This is a follow-up to a video made by bladesmith Walter Sorrells about how to make a knife from a railroad spike. This project is a little simpler than the previous project — but the basic principles are the same.

    Help support this channel at:

    https://www.patreon.com/WalterSorrells

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    Web: https://www.waltersorrellsblades.com
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    Twitter: @WalterSorrells
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    In this video instructors Chris Collier & Nate DeMarse demonstrate conventional forcible entry techniques for outward opening doors. At first glance this door appears to be only locked by a key in the knob lock. The halligan is set approximately 6″ above the knob but when the door is pried it becomes obvious that there are other locking devices in place. If you are prepared for, and expect auxiliary locking devices you will easily overcome them when they are encountered. In this case, there were FIVE locking devices securing the door. They are listed below from the bottom to the top:
    - A foot-bolt (slide-bolt) that secured into the floor
    - A vertical dead-bolt below the knob
    - Key-in-the-knob lock
    - Slide-bolt just above the knob (4 screw holes, lock fell off)
    - Slide-bolt a few inches above the last lock shown in the video

    All FIVE of these locks were forced in approximately a minute.

    Had this key in the knob lock been a panic hardware device firefighters attempting the “framing square” technique would have been defeated and had to return to conventional forcible entry.

    Fire service tools have been invented and modified over the years. A few were intended for fire service application and others were borrowed from other trades. Many fire service tool adoptions and adaptions are worthwhile and useful. The ones that we (Brotherhood Instructors LLC) disagree with are the ones that have a very limited scope of use and require extra equipment. Our goal is to keep fire ground operations simple and systematic while sticking with tactics that have proven themselves to be valid.

    We apologize for the digital skipping and glitch while we were driving the adz to the frame. We shot this video from two angles, and this was the best with this segment.