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An angle bracket or angle brace or angle cleat is an L-shaped fastener used to join two parts generally at a 90-degree angle. It is typically made of metal but it can also be made of wood or plastic. Angle brackets feature holes in them for screws. A typical example use of is a shelf bracket for mounting a shelf on a wall.
In oil field tubing, buttress thread is a pipe thread form designed to provide a tight hydraulic seal. The thread form is similar to that of Acme thread [10] but there are two distinct threaded portions of differing diameters and profiles, the larger having a wedging profile, with a tapered sealing portion in between the larger and smaller diameters.
Figure 1 of the original patent for the molly bolt, U.S. Patent No. 2,018,251. The molly bolt was patented in 1934 by George Frederick Croessant. [3] Although his patent acknowledges that expandable fasteners of this general kind were already known, Croessant's patent is intended to provide "an improved and adequate anchoring grip that may be retightened if necessary and that will permit ...
Clothes hanger, a device in the shape of human shoulders or legs used to hang clothes on; Casing hanger, part of a wellhead assembly in oil drilling; Derailleur hanger, a slot in a bicycle frame where the derailleur bolt attaches; Tie (engineering), a type of structural member; Hanger, part of a skateboard
Pocket screws have a wide washer head to spread the load for a firm bond, and prevent screwing too far into the joint and cracking the wood. The self tapping screws will grip any type of wood, but coarse threads are needed for softer wood and fine threads are needed for harder. [5]
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for cutting cloth leaving a sawtooth edge, so that the fabric does not fray. Sewing chatelaine scissors Chatelaine is a French term meaning 'mistress of a castle, chateau or stately home' that dates back to the Middle Ages. It became used in English to refer to an ornamental clasp or hook from which chains were hung from the waist, holding ...
A variety of brass fasteners. Note the two legs of different length. A brass fastener, butterfly clips, brad, paper fastener or split pin is a stationery item used for securing multiple sheets of paper together. A patent of the fastener was issued in 1866 to George W McGill. [1]
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