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2. Screw extractor - Wikipedia

   en.wikipedia.org/wiki/Screw_extractor

   Square flute screw extractors. Straight fluted extractors may come in a kit that also has associated drills, drill bushings, and special nuts, or be sold individually. The screw is drilled out with the appropriate drill and drill bushing. The extractor is then hammered into the hole with a brass hammer, because a steel hammer is more likely to ...

3. 19-inch rack - Wikipedia

   en.wikipedia.org/wiki/19-inch_rack

   The 19 inch dimension includes the edges or ears that protrude from each side of the equipment, allowing the module to be fastened to the rack frame with screws or bolts. Common uses include computer servers , telecommunications equipment and networking hardware , audiovisual production gear, professional audio equipment, and scientific equipment .

4. Tap and die - Wikipedia

   en.wikipedia.org/wiki/Tap_and_die

   While modern nuts and bolts are routinely made of metal, this was not the case in earlier ages, when woodworking tools were employed to fashion very large wooden bolts and nuts for use in winches, windmills, watermills, and flour mills of the Middle Ages; the ease of cutting and replacing wooden parts was balanced by the need to resist large amounts of torque, and bear up against ever heavier ...

5. Split pin - Wikipedia

   en.wikipedia.org/wiki/Split_pin

   A split pin (UK usage) / cotter pin (UK/USA usage) holding a rod in place with a washer. A split pin, also known as a cotter pin, or cotter key in the US, [1] is a metal fastener with two tines that are bent during installation, similar to a staple or rivet.

6. Irwin Industrial Tools - Wikipedia

   en.wikipedia.org/wiki/Irwin_Industrial_Tools

   Previous logo. Irwin Industrial Tools is an American manufacturer and distributor of hand tools and power tool accessories. It is owned by Stanley Black & Decker.It is best known for producing Vise-Grip locking pliers.

7. Drill bit - Wikipedia

   en.wikipedia.org/wiki/Drill_bit

   Screw extractors are essentially left-hand bits of specialized shape, used to remove common right-hand screws whose heads are broken or too damaged to allow a screwdriver tip to engage, making use of a screwdriver impossible. The extractor is pressed against the damaged head and rotated counter-clockwise and will tend to jam in the damaged head ...