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The major diameter is given by 6p 1.2, [4]: 12 rounded to two significant figures in mm and the hex head size (across the flats) is 1.75 times the major diameter. BA sizes are specified by the following British Standards: BS 57:1951 — B.A. screws, bolts and nuts
Below are some common spanner sizes for metric screw threads. Hexagonal (generally abbreviated to "hex") head widths (width across flats, spanner size) are for DIN 934 hex nuts and hex head bolts. Other (usually smaller) sizes may occur to reduce weight or cost, including the small series flange bolts defined in ISO 4162 which typically have ...
J-nut or U-nut, sheet metal nut, speed nut (ambiguously) Designed to be clipped to sheet metal Coupling nut: Extension nut A threaded fastener for joining two male threads, most commonly a threaded rod,[1][2] but also pipes Flange nut: Collar nut Has a wide flange at one end that acts as an integrated washer HARDLOCK Nut [3] Eccentric Double Nut
A self-aligning nut, also known as a spherical nut [2] or leveling nut, is a type of nut used in applications where the fastener is not perpendicular to the surface to which the nut anchors. A flange nut is used inside a specially shaped dished-out washer. The device is commonly used in the aerospace industry.
A jet nut, [1] also known as a k-nut, [1] [2] [3] is a special type of hex locknut that is commonly used in the aerospace and automotive racing industries. [ 3 ] It has a flange on one end of the nut , the hex is smaller than a standard sized hex nut , and it is shorter than a standard hex nut.
Los Angeles opened its main airport on October 1, 1928. At the time of the opening, it was known as Mines Field and was little more than a dirt airstrip with no facilities. The first building, the historic Hangar No. 1, was erected in 1929. In 1930, the facility was renamed Los Angeles Municipal Airport, and mostly served general aviation.
[15] [14] The airport was renamed Los Angeles International Airport in 1949. [17] The temporary terminals remained in place for 15 years but quickly became inadequate, especially as air travel entered the "jet age" and other cities invested in modern facilities. Airport leaders once again convinced voters to back a $59 million bond on June 5, 1956.
Tab base nuts. Tab base nuts are designed for spot welding on flat workpieces. They have a locating boss around the threads to locate it in a pilot hole. [1] Hex & square nuts. These nuts are very similar to standard square or hex nuts, but have a locating boss and welding projections. The bosses also keep weld spatter out of the threads. [2]