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  2. Nail (fastener) - Wikipedia

    en.wikipedia.org/wiki/Nail_(fastener)

    Ring shank: small directional rings on the shank to prevent the nail from working back out once driven in; common in drywall, flooring, and pole barn nails Shank : the body the length of the nail between the head and the point; may be smooth, or may have rings or spirals for greater holding power

  3. Barrel threads - Wikipedia

    en.wikipedia.org/wiki/Barrel_threads

    The shank length is not always the same at the thread length, which is the case if the insert has a threadless portion (sub-shank) Tenon designates the thread length; Shoulder designates the barrel diameter in front of the thread portion; Unless otherwise mentioned, right hand threads are assumed. Left hand threads are designated "LH".

  4. Ring expansion and contraction - Wikipedia

    en.wikipedia.org/wiki/Ring_expansion_and_contraction

    Rings can be expanded by attack of the ring onto an outside group already appended to the ring (a migration/insertion), opening of a bicycle to a single larger ring, or coupling a ring closing with an expansion. [1] These expansions can be further broken down by what type of atom they incorporate (a carbon or a heteroatom) into the expanded ring.

  5. Collet - Wikipedia

    en.wikipedia.org/wiki/Collet

    Several machine collets (top and centre) and a dismantled pin chuck (below). Generally, a collet chuck, [3] considered as a unit, consists of a tapered receiving sleeve (sometimes integral with the machine spindle), the collet proper (usually made of spring steel) which is inserted into the receiving sleeve, and (often) a cap that screws over the collet, clamping it via another taper.

  6. Shank (sewing) - Wikipedia

    en.wikipedia.org/wiki/Shank_(sewing)

    Shank buttons have a hollow protrusion on the back through which thread is sewn to attach the button. Button shanks may be a separate piece added to the back of a button, or be carved or moulded directly onto the back of the button, in which case the button is referred to by collectors as having a 'self-shank'; [1] self-shanks are a common construction for older shell and glass buttons.

  7. Bit ring - Wikipedia

    en.wikipedia.org/wiki/Bit_ring

    Eggbutt ring. Types of Bits: Found on snaffles, gag bits, and bradoons. Pelham bits also usually have an eggbutt design for the snaffle ring on the shank.. Action: the eggbutt has a slightly oval (egglike) shape, and consists of a round outer ring attached to a more upright, straighter cheek which is fixed to the mouthpiece.