HARDWARE, IWAH, HEAVY DUTY
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A screw jack consists of a heavy-duty vertical screw with a load table mounted on its top, which screws into a threaded hole in a stationary support frame with a wide base resting on the ground. A rotating collar on the head of the screw has holes into which the handle, a metal bar, fits.
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Round Slings are manufactured to EN 1492-2 and have a safety factor of 7:1 The load bearing fibers are wound together to form an endless hank.
The working load limit is determined by number of turns in the hank.
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