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2. Stem (bicycle part) - Wikipedia

   en.wikipedia.org/wiki/Stem_(bicycle_part)

   Quill stem classic single-piece type Threadless stem shown with cable hole. The stem is the component on a bicycle that connects the handlebars to the steerer tube of the bicycle fork. Sometimes called a goose neck, [1] a stem's design belongs to either a quill or threadless system, and each system is compatible with respective headset and fork ...

3. Headset (bicycle part) - Wikipedia

   en.wikipedia.org/wiki/Headset_(bicycle_part)

   A threadless headset and fork is marginally lighter than an equivalent threaded headset and fork. A threadless stem is more rigidly attached to the forks, giving improved rigidity at the handlebars. On bicycles which have not been maintained, water can find its way between the stem and steerer tube of threaded headsets, causing corrosion and ...

4. Bicycle brake - Wikipedia

   en.wikipedia.org/wiki/Bicycle_brake

   Two pads are pressed outward against the braking surface on the inside of the hub shell. Shell inside diameters on a bicycle drum brake are typically 70–120 mm (2.756–4.724 in). Drum brakes have been used on front hubs and hubs with both internal and external freewheels. Both cable- and rod-operated drum brake systems have been widely produced.

5. Caster - Wikipedia

   en.wikipedia.org/wiki/Caster

   A swivel caster. A caster (or castor) is an undriven wheel that is designed to be attached to the bottom of a larger object (the "vehicle") to enable that object to be moved. Casters are used in numerous applications, including shopping carts, office chairs, toy wagons, hospital beds, and material handling equipment. High capacity, heavy duty ...

6. Continuous casting - Wikipedia

   en.wikipedia.org/wiki/Continuous_casting

   Billet casters cast smaller section sizes, such as below 200 mm square, with lengths up to 12 m long. Cast speeds can reach up to 4 m/minute. Rounds: either 500 mm or 140 mm in diameter; Conventional beam blanks: look similar to I-beams in cross-section; 1048×450 mm or 438×381 mm overall; Near net shape beam blanks: 850×250 mm overall

7. Screw thread - Wikipedia

   en.wikipedia.org/wiki/Screw_thread

   Similarly, M10 (10 mm nominal outer diameter) as per ISO 261 has a coarse thread version at 1.5 mm pitch and a fine thread version at 1.25 mm pitch. The term coarse here does not mean lower quality, nor does the term fine imply higher quality. The terms when used in reference to screw thread pitch have nothing to do with the tolerances used ...