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  2. Preferred metric sizes - Wikipedia

    en.wikipedia.org/wiki/Preferred_metric_sizes

    Machine screws with different thread diameters Hex key set with metric sizes from 2 mm to 10 mm according to sizes for use with ISO 262 screw sizes (except 3.5 mm for M6 internal set screw) For each size bolt or screw and type of head, there is a corresponding size driver prescribed by various ISO standards, including:

  3. ISO metric screw thread - Wikipedia

    en.wikipedia.org/wiki/ISO_metric_screw_thread

    A metric ISO screw thread is designated by the letter M followed by the value of the nominal diameter D (the maximum thread diameter) and the pitch P, both expressed in millimetres and separated by a dash or sometimes the multiplication sign, × (e.g. M8-1.25 or M8×1.25).

  4. 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.

  5. Fugas-class minesweeper - Wikipedia

    en.wikipedia.org/wiki/Fugas-class_minesweeper

    1 x 100 mm naval cannon B-24 M1936; Anti-aircraft artillery; 1 x 45mm 21-K or ; 1–3 x 37mm 70-K or ; 2 x 25mm 72-K AA guns ; 2 x Oerlikon 20 mm cannon (1942 upgrade in Baltic Fleet) Machine guns; 2 x 12.7mm DK machine gun; 2–4 x DShK machine gun (1942 upgrade in Baltic and Pacific fleets) 2 x M2 Browning machine gun (1942 upgrade in Pacific ...

  6. Square thread form - Wikipedia

    en.wikipedia.org/wiki/Square_thread_form

    The square thread form is a common screw thread profile, used in high load applications such as leadscrews and jackscrews. It gets its name from the square cross-section of the thread. [1] It is the lowest friction and most efficient thread form, but it is difficult to fabricate.

  7. Deloitte predicts record spending on Black Friday and Cyber ...

    www.aol.com/finance/deloitte-predicts-record...

    Consumers are ready to open their wallets. (Matthew Hatcher/Bloomberg via Getty Images)

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