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These drive fittings come in four common sizes: 1 ⁄ 4 inch, 3 ⁄ 8 inch, 1 ⁄ 2 inch, and 3 ⁄ 4 inch (referred to as "drives", as in "3 ⁄ 8 drive"). Despite being denominated in inches, these are trade names ( common product name ), and manufacturers construct them to 6.3 mm, 9.5 mm, 12.5 mm and 19 mm, having been rounded to a ...
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 on March 30, 1875. As with other drive types conceived and patented in the 1860s through 1890s, it was not manufactured widely during its patent lifespan because of the difficulty and expense ...
A common misconception is that a 12-point socket is more likely to round off the corners of a nut or bolt than a 6-point socket. In fact, since the torque is applied at the corners of the fastener, the two sockets have the same number of contact points, apply the same amount of torque, and one is no more likely to round off the corners than ...
Most box end wrenches are sold as '12-point' because 12-point wrenches fit over both 12-point and 6-point bolts. 12-point wrenches also offer a higher number of engagement points over six-point. However, 12-point wrenches have been known to cause round-off damage to 6-point bolts as they provide less contact space. [5]
4.8–6.4 GT/s Sandy Bridge-E/EP and Ivy Bridge-E/EP both support 40 PCIe 3.0 lanes. Using the Xeon focused 2011 socket gives also 4 memory Channels. rPGA 988B/ Socket G2: 2011 Intel Core i7 Intel Core i5 Intel Core i3 (2000, 3000 series) Notebook rPGA: 988 1 2.5 GT/s, 4.8 GT/s Socket FM1: 2011 AMD Llano Processors: Desktop PGA: 905 1.27 5.2 GT/s
A square screw drive uses four-sided fastener heads which can be turned with an adjustable wrench, open-end wrench, or 8- or 12-point [67] sockets. Common in the 19th and early 20th centuries, when it was easier and cheaper to manufacture than most other drives, it is less common today (although still easy to find) because the external hex is ...
This design can be said to be the next evolution of the ratchet design of SK Hand Tools' Theodore Rueb. [2] This ratchet was a very successful design, lasting from its introduction in 1961 to the eventual closure of New Britain in the 1980s. The ratchet was a compression engagement, using 12 teeth with a 60 tooth ratchet count.
AS/NZS 3112 compliant plugs have two flat pins forming an inverted V-shape plus a vertical earthing pin. The flat blades measure 6.35 by 1.6 mm (1 ⁄ 4 by 1 ⁄ 16 in) with the active (line) and neutral pins 17.35 mm (11 ⁄ 16 in) long set 30° to the vertical and the vertical earth pin being 20 mm (0.787 in) in length. [15]