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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
An assortment of screws, and a US quarter for size comparison A wood screw: a) head; b) non-threaded shank; c) threaded shank; d) tip The six classical simple machines. A screw is an externally helical threaded fastener capable of being tightened or released by a twisting force to the head. The most common uses of screws are to hold objects ...
Wood screws are commonly available with flat, pan, or oval-heads. A wood screw generally has a partially unthreaded shank below the head. The unthreaded portion of the shank is designed to slide through the top board (closest to the screw head) so that it can be pulled tight to the board to which it is being attached.
Though they vary in design, nailsets are typically made from a hard round or square steel rod which tapers at one end to a flat or slightly hollowed tip. The tip is placed against the head of the nail, while the other end of the nailset is struck with a hammer. [2] Nailsets come with different sized tips suited to different sized nail heads.
Increased water content causes wood to expand, so that treenails gripped the planks tighter as they absorbed water. [11] However, when the treenail was a different wood species from the planking, it usually caused rot. Treenails and iron nails were most common until the 1780s when copper nails over copper sheathing became more popular. [3]
Each wood species has a general respiration rate; a generally-assumed time length for acclimating a board to its locale is 1 year per inch of thickness. In preparing raw wood for eventual usage as furniture or structures, one must account for uneven respiration and changes in the wood's dimensions, as well as cracking or checking. [5] [6]