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  2. Leather punch - Wikipedia

    en.wikipedia.org/wiki/Leather_punch

    A leather punch is a hole punch specifically for making holes in leather. The working tip of the punch is a hollow steel cylinder with a sharp circular knife-like edge. The leather piece is placed on a hard surface, which may be a part of the tool set, and the punch is forced through it, cutting out a small circular piece which is discarded.

  3. Rivet - Wikipedia

    en.wikipedia.org/wiki/Rivet

    Drawing of round head rivets, 1898 A typical technical drawing of a universal head solid rivet Riveters work on the Liberty ship SS John W. Brown (December 2014).. Rivet holes have been found in Egyptian spearheads dating back to the Naqada culture of between 4400 and 3000 B.C. Archeologists have also uncovered many Bronze Age swords and daggers with rivet holes where the handles would have been.

  4. Punch (tool) - Wikipedia

    en.wikipedia.org/wiki/Punch_(tool)

    A drift punch is constructed as a tapered rod, with the hammer acting on the large end of the taper. The long end of a drift punch is placed into the semi-aligned bolt holes of two separate components, and then driven into the hole. As it is driven in, the taper forces the two components into alignment, allowing for easy insertion of the fastener.

  5. List of drill and tap sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_drill_and_tap_sizes

    Below is a comprehensive drill and tap size chart for all drills and taps: Inch, imperial, and metric, up to 36.5 millimetres (1.44 in) in diameter. In manufactured parts, holes with female screw threads are often needed; they accept male screws to facilitate the building and fastening of a finished assembly.

  6. Talk:Rivet - Wikipedia

    en.wikipedia.org/wiki/Talk:Rivet

    Pop is the noise they make when the head breaks from the mandril. If the head pulls out without snapping off, then the rivet diameter is too small for the hole. Bye nature pop rivets are blind. Blind simply means only one operator is needed on one side.202.125.31.66 10:29, 1 May 2017 (UTC)

  7. This Man Knows the Truth About Amelia Earhart. Why Doesn’t ...

    www.aol.com/man-knows-truth-amelia-earhart...

    But the target itself was impossibly small—the size, approximately, of three golf courses. ... Measuring 19 inches wide by 23 inches long and packed with 103 rivet holes, the unassuming piece of ...

  8. Tap and die - Wikipedia

    en.wikipedia.org/wiki/Tap_and_die

    where is the tap drill size, is the major diameter of the tap (e.g., 10 mm for a M10×1.5 tap), and pitch is the pitch of the thread (1.5 mm in the case of a standard M10 tap) and so the correct drill size is 8.5 mm. This works for both fine and coarse pitches, and also produces an approximate 75% thread.

  9. Snap fastener - Wikipedia

    en.wikipedia.org/wiki/Snap_fastener

    The two halves of a riveted leather snap fastener. The top half has a groove which "snaps" in place when "pressed" into the bottom half. A snap fastener, also called snap button, press button, [1] press stud, [1] press fastener, dome fastener, popper, snap and tich (or tich button), is a pair of interlocking discs, made out of a metal or plastic, commonly used in place of traditional buttons ...

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