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Process Equipment
Structural
A nut is a small metallic piece of metal with a spiral cut groove that runs around a hole in its center while a bolt is a metallic piece with a round stem as its body and threaded into one end. Bolts have different length sizes while nuts have a standard size. Studs provide the ability to obtain much more accurate torque values be- cause they don't twist during tightening as bolts do. Bolts and nuts can be made of various materials such as steel, titanium or plastic. The finish or plating on a metal bolt or nut affects its look and durability. Below are some common finishes and benefits: Zinc - Most common, low cost, resists corrosion and rust Nickel - Very hard finish, higher investment, good corrosion resistance Chromium – Bright finish, good rust and corrosion resistance Chromate – Adds color, shine, superior rust resistance Anodizing - Aluminum, hard oxide surface, excellent corrosion resistance View Details