Case Hardened

Heat treated fastener in which the surface is harder than the core.…

Case Depth

That area of a fastener, measured from the surface inward, which has a different hardness requirement than its core.…

Carbon Steel

Ordinary steel with no significant additions besides carbon.…

Carbon

Adds strength to stainless steel, but also lowers corrosion resistance. The more carbon there is, the more chromium must be added, because carbon offsets 17 times its own weight in chromium to form carbides, thus reducing the chromium available for …

Carbide Precipitation

Carbon that breaks loose from its bond within the stainless solution when material is heated between 800 – 1400 degrees F. Under severe corrosive conditions, it can result in extra oxidation and surface corrosion. See SOLUTION ANNEALED.…

Captive Screw

Where the shoulder of a screw is perceptibly smaller in diameter than the threaded portion (technically the minor diameter or less).…

Cap Screw

Fastener formed by “cold forming” with tolerances normally tighter than hot forged bolts.  “Caps” usually pertaining to “Hex”, Socket” “Square” etc.…

Broach

Using sharp edges to cut material and push it away, broach usually refers to the socket drive on socket screws.…

Brass

The most common alloy of copper, brass is basically two-thirds copper, one-third zinc. It is non-magnetic with good strength and toughness, high electrical conductivity, and an attractive lustrous finish. It has good corrosion resistance but not in salt water. Brass …

Bolt

An externally threaded fastener which requires a nut to secure fastened joint.…


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