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What Is A Finished Hex Nut

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What Is A Finished Hex Nut?

The finished hex nut is perhaps the most commonly used nut in the world today. Found in structural, machinery and automotive applications, hex nuts and heavy hex nuts couple with bolts to create a tight, secure joint. And the finished hex nut provides adequate strength for many different types of common applications.

Differences Between A Finished Hex Nut And Other Nuts

•    Heavy Hex Nuts – made with a thicker wall, this type of nut can handle heavy loads, hence the name ‘heavy hex’
•    Thick Nuts – unlike heavy hex nuts, which are formed using a thicker wall, thick nuts are actually taller or higher than standard finished hex nuts to better distribute loads
•    Lock Nuts – this style of nut uses additional friction or simple resistance to avoid loosening and provide a more secure joint - you’ll find a wide selection of lock nuts available in several materials specifically suited for different applications
•    Jam Nuts – this simple style of thin nut is installed between a hex nut and joint material, allowing the stronger nut to handle the load


How Hex Nuts Cause Fastener Failure?

Nuts are designed and manufactured to greater strengths than the bolts they are coupled with. You can use a nut designed with greater strength than the bolt, but substituting a weaker nut and stronger bolt results in fastener failure.
Always choose a nut finished to match the bolt. Hot dipped galvanized hex bolts used on structural applications need to be joined with hot dipped galvanized nuts, and correspondingly, with hot dipped galvanized washers. Using the proper combination of fasteners allows for a reliable fit designed to last for years, even under heavy loads and extreme conditions.
While the common finished hex nut experiences wide use across the construction, automotive and engineering industries, other types of nuts can be found in specific applications where the design advantages are realized.