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2. Drill bit shank - Wikipedia

   en.wikipedia.org/wiki/Drill_bit_shank

   For example, this allows a 1 ⁄ 2-inch (13 mm) bit to be used in a pistol-grip drill's 3 ⁄ 8-inch (9.5 mm) chuck. One particular type of reduced-shank drill bits are Silver & Deming ( S&D ) bits, whose sets run from 9 ⁄ 16 -inch (14 mm) to 1 + 1 ⁄ 2 -inch (38 mm) drill body diameter with a standard 1 ⁄ 2 -inch (13 mm) reduced shank for ...

3. Hughes Tool Company - Wikipedia

   en.wikipedia.org/wiki/Hughes_Tool_Company

   The company was established in December 1908 [1] as Sharp-Hughes Tool Company when Howard R. Hughes Sr. patented a roller cutter bit that dramatically improved the rotary drilling process for oil drilling rigs. He partnered with longtime business associate Walter Benona Sharp to manufacture and market the bit.

4. Drill bit - Wikipedia

   en.wikipedia.org/wiki/Drill_bit

   While the above is a common use of center drill bits, it is a technically incorrect practice and should not be considered for production use. The correct tool to start a traditionally drilled hole (a hole drilled by a high-speed steel (HSS) twist drill bit) is a spotting drill bit (or a spot drill bit, as they are referenced in the U.S.). The ...

5. Irwin Industrial Tools - Wikipedia

   en.wikipedia.org/wiki/Irwin_Industrial_Tools

   Irwin was founded in 1885 in Martinsville, Ohio as the Irwin Auger Bit Company by Charles Irwin, a pharmacist. Irwin had bought the rights to a solid-center auger bit from a local blacksmith. [3] In 1924, another blacksmith, Danish immigrant William Petersen of DeWitt, Nebraska, invented the first locking pliers [4] and named them Vise-Grips. [5]

6. List of screw drives - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_drives

   Spline drives were specified for 5, 6.3, 8, 10, 12, 14, 16, and 20 mm size screws. [86] Its primary advantage is its ability to resist cam-out, so it is used in high-torque applications, such as tamper-proof lug nuts, cylinder head bolts, and other engine bolts.

7. Israel pounds Syrian army bases, denies deeper incursion - AOL

   www.aol.com/news/syrias-rebels-form-government...

   DAMASCUS (Reuters) -Israel pounded Syrian army bases on Tuesday in strikes it says aim to keep weapons from falling into hostile hands, but denied its forces had advanced into Syria beyond a ...