Nail (fastener)
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In woodworking and construction, a nail is a small object made of metal which is used as a fastener, as a peg to hang something, or sometimes as a decoration. Usually, nails have a sharp point on one
A metal nail
Nailor's Workshop King's Norton, an etching by Henry Martin Pope (1843–1908)
Different types of nails: 1) roofing 2) umbrella head roofing 3) brass escutcheon pin 4) finish 5) concrete 6) spiral-shank 7) ring-shank (a used, bent "gun" nail, with barbs left over from the tool's feed system)
Horseshoe nails
Screw
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A screw is an externally helical threaded fastener capable of being tightened or released by a twisting force to the head. The most common use of screws is to hold objects together and there are many
Nail (fastener)
…Rail spike Screw Truss connector plate…
An assortment of screws, and a US quarter for size comparison
A Brown & Sharpe single-spindle screw machine
A flat head machine screw
Lag screw, also called a lag bolt