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Inserts are pins, bolts, screws, joints and other structures that are used to transfer localized loads to a composite panel or to join two composite panels together. Metallic inserts are commonly used in the aerospace and marine industries to attach objects to sandwich composite panels. Here is some history as referenced in the forward of ASME ...
The internal-drive square socket for screws (as well as the corresponding triangular socket drive) had been conceived several decades before the invention of the Robertson screw and driver. An earlier patent covering both square-socket- and triangle-socket -drive wood screws, U.S. patent 161,390 , was issued to Allan Cummings of New York City ...
The advantage of this screw type over a self-drilling screw is that, if the screw is reinstalled, new threads are not cut as the screw is driven. set bolt: tap bolt, setscrew: A bolt that is threaded all the way to the head. An ASME B18.2.1 compliant set/tap bolt has the same tolerances as an ASME B18.2.1 compliant hex cap screw. set screw ...
Nielsen said its Big Data + Panel national audience measurement technology, which relies on information about smart-TV screen viewership as well as the company’s usual panel of consumers, passed ...
Wall framing in house construction includes the vertical and horizontal members of exterior walls and interior partitions, both of bearing walls and non-bearing walls. . These stick members, referred to as studs, wall plates and lintels (sometimes called headers), serve as a nailing base for all covering material and support the upper floor platforms, which provide the lateral strength along a
A former service was the Nielsen ratings, an audience measurement system that measures television, radio and newspaper audiences in their respective media markets. In 1950, A.C. Nielsen acquired the C. E. Hooper company and began attaching recording devices to a statistical sample of about 1200 consumer television sets in the United States. [7]