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The Phillips/square screw drive, also known as the Quadrex, Pozisquare screw drive, is a combination of the Phillips and Robertson screw drives. While a standard Phillips or Robertson tool can be used, there is also a dedicated tool for it that increases the surface area between the tool and the fastener so it can handle more torque. [62]
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 ...
They may either have a Phillips flat head or a slotted hex washer head. Nominal (thread) sizes range from 0.1875 to 0.375 in (4.763 to 9.525 mm) and lengths from 1.25 to 5 in (32 to 127 mm). Typically an installer uses a hammer drill to make a pilot hole for each concrete screw and a powered impact driver to drive the screw. The drill hole ...
A small tipper body with screw type gear was also listed, as was a standard dropside truck. Several styles of van body were offered, such as a box body of 300 cu ft (8.5 m 3), a van body of 315 cu ft (8.9 m 3), a pantechnicon with integral cab offering 415 cu ft (11.8 m 3) capacity or with a factory cab 400 cu ft (11 m 3). A milk float was also ...
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The Dana/Spicer Model 70 is an automotive axle manufactured by Dana Holding Corporation and has been used in OEM heavy duty applications by Chevrolet, Dodge, and Ford.It can be identified by its straight axle tubes, 10 bolt asymmetrical cover, and a "70" cast in to the housing, which is visually similar to the Dana 60.
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The e-commerce giant, Rivian's largest investor with a 16% stake, has ordered 100,000 electric delivery vans to be deployed by 2030. Last year, sales to Amazon represented approximately 19% of ...