WHAT THREAD? UNC, UNF, BSF, BSW

fine and coarse thread image

How to measure the thread The pitch is the distance from the crest of one thread to the next in mm. TPI (Threads per inch) is used by inch thread Standard Otherwise known as UNC Unified National Coarse standard threads (coarse thread) UNC meaning Unified Coarse, is the most dominant used in the USA. Often used in the agricultural industry because of their…

Nickel

Nickel - money

Nickel Similar to bright zinc but slightly more of a yellow tint and very shiny and smooth.  Very hard wearing and durable. Mostly used on machine screws. Nickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile. Pure nickel, powdered to maximize the reactive surface area,…

Stainless Steel

Stainless Steel - Nuts

A2 Stainless Steel Most common stainless steel A2(304).  Offers excellent corrosion resistance for most applications.  Widely available in metric and imperial A4 Stainless Steel Marine grade A4(316).  Offers increased resistance to chloride corrosion compared to A2(304).  Widely available in metric sizes and can be sourced in imperial threads A4-80 Stainless Steel The same as A4…

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