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The British Standard for Metric Series Metal Washers (BS4320), written in 1968, coined the term "form". The forms go from A to G and dictate the outside diameter and thickness of the flat washers. The forms go from A to G and dictate the outside diameter and thickness of the flat washers.
The .308×1.5" Barnes is a wildcat cartridge based on the .308 Winchester (7.62×51mm NATO). The cartridge is similar to the 7.62×39mm Russian (M43) cartridge though it outperforms the Soviet cartridge. [2]
Used on sheet metal. It permanently anchors itself to the sheet metal by swaging the surrounding material. Star nut Threadless fork star nut Part of a threadless-style headset used to attach a bicycle fork to a bicycle frame. Semi-permanently anchors itself inside the fork steerer tube. Can be mounted using a star nut setter. T-nut
Desktop Metal was founded in October 2015 [17] in Cambridge, Massachusetts, as a startup company focused on 3D metal printing. [18] Among the seven founders [8] were Ric Fulop [2] and Jonah Myerberg of A123 Systems, Rick Chin of SolidWorks, and Yet-Ming Chiang, Ely Sachs, Christopher Schuh, [18] and A. John Hart of the Massachusetts Institute of Technology (MIT). [8]
Inch square-headed and hex-headed lag screws are covered by ASME B18.2.1. A typical lag screw can range in diameter from 4 to 20 mm or #10 to 1.25 in (4.83 to 31.75 mm), and lengths from 16 to 200 mm or 1 ⁄ 4 to 6 in (6.35 to 152.40 mm) or longer, with the coarse threads of a wood-screw or sheet-metal-screw threadform (but larger).
Like other fusible alloys, e.g. Rose's metal, Wood's metal can be used as a heat-transfer medium in hot baths. Hot baths with Rose's and Wood's metals are not used routinely but are employed at temperatures above 220 °C (428 °F). [7] At room temperature, Wood's metal has a modulus of elasticity of 12.7 GPa and a yield strength of 26.2 MPa. [8]