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2. Drill bit sizes - Wikipedia

   en.wikipedia.org/wiki/Drill_bit_sizes

   So, instead of 78/64 inch, or 1 14/64 inch, the size is noted as 1 7/32 inch. Below is a chart providing the decimal-fraction equivalents that are most relevant to fractional-inch drill bit sizes (that is, 0 to 1 by 64ths).

3. List of drill and tap sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_drill_and_tap_sizes

   Example (inch, coarse): For size 7 ⁄ 16 (this is the diameter of the intended screw in fraction form)-14 (this is the number of threads per inch; 14 is considered coarse), 0.437 in × 0.85 = 0.371 in. Therefore, a size 7 ⁄ 16 screw (7 ⁄ 16 ≈ 0.437) with 14 threads per inch (coarse) needs a tap drill with a diameter of about 0.371 inches.

4. Computer case screws - Wikipedia

   en.wikipedia.org/wiki/Computer_case_screws

   The #6-32 UNC is a UTS screw specifying a major thread diameter of #6 which is defined as 0.1380 inches (3.51 mm); and 32 tpi (threads per inch) which equates to a thread pitch of 0.031250 inches (0.7938 mm). The optional UNC specification indicates the standard coarse thread is used which is defined for #6 screws as 32 tpi rendering 'UNC ...

5. Rivet - Wikipedia

   en.wikipedia.org/wiki/Rivet

   A "dash 3 dash 4" (XXXXXX-3-4) designation indicates a 3 ⁄ 32-inch diameter and 4 ⁄ 16-inch (or 1 ⁄ 4-inch) length. Some rivets lengths are also available in half sizes, and have a dash number such as –3.5 (7 ⁄ 32 inch) to indicate they are half-size. The letters and digits in a rivet's identification number that precede its dash ...

6. Tap and die - Wikipedia

   en.wikipedia.org/wiki/Tap_and_die

   A tap is used to cut or form the female portion of the mating pair (e.g. a nut ). A die is used to cut or form the male portion of the mating pair (e.g. a bolt ). The process of cutting or forming threads using a tap is called tapping, whereas the process using a die is called threading . Both tools can be used to clean up a thread, which is ...

7. List of screw and bolt types - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_and_bolt_types

   In 1913, Woolley and Meredith defined them like Anthony, but gave the following dimensions: hex head cap screws up to and including 7 ⁄ 16 inch (11.1125 mm) have a head that is 3 ⁄ 16 inch (4.7625 mm) larger than the shank diameter; screws greater than 1 ⁄ 2 inch (12.7 mm) in diameter have a head that is 1 ⁄ 4 inch (6.35 mm) larger than ...