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Washers

Commercial Flat Washers
Flat washers are used to increase the bearing surface of a bolt head or nut and distribute pressure away from the points of the hex or square.

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Military Standard Washers
There are several standards relating to flat washers and lock washers. Some just deal with the dimensions of the finished products. Others add physical strength characteristics to the specs.

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Special Washers
Some fastener assemblies require flat washers with nonstandard dimensions. For more stressful loads a thicker or wider washer may be needed.

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USS & SAE Washers
USS (United States Standard) & SAE (Society of Automotive Engineers) are 2 common dimensional standards for steel flat washers.

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Lock Washers
Split lockwashers are made mostly from coils of wire. Lockwashers made from coil are subject to high volume production runs.

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*Nitronic® is a registered trademark of Armco, Inc., *Hastelloy® is a registered trade mark of Haynes,
*Carpenter® 20 is a registered trade mark of Carpenter Technologies,
*Inconel® is a registered trade mark of Inco Alloys International, *254 SMO® is a registered trademark of Avesta Sheffield

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