Anchors are used to attach an object to a support structure. Common types include concrete anchors, expansion anchors, floor anchors, wall anchors, and specialty anchors.
Bolts are threaded rods or pins that fasten objects together. They usually have a head at one end and a thread at the other. Bolts are secured by threaded nuts, and are available in both metric and non-metric designations.
Spikes are long, thick, sharp-pointed pieces of metal or plastic, similar to heavy nails. They are used in railroad ties and other heavy duty construction applications.
Washers are disks of metal or non-metallic material placed beneath a nut, an axle bearing, or a joint, to relieve friction, prevent leakage, isolate, prevent loosening, or distribute pressure.
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