HEX NUTS

Hex nuts are everywhere you look. They are the most common fastener in the industry yet when you take a closer look, not all hex nuts are the same. We stock the highest quality product in a wide range of styles. And we stock them up to 5” in diameter. Large diameter metrics nuts are also available.

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Our Product Line Includes…

Finished Hex Nuts	Carbon Steel
Jam Nuts	Grade 5
Heavy Hex Nuts	Grade 8
Heavy Jam Nuts	A194 2H
Thick Nuts	NC and NF
High Nuts

The nut plays an important role in achieving a safe secure assembly. The nut is the component that is rotated to tighten the assembly in the majority of fastener applications. The nut must rotate freely during the tightening of the assembly to achieve the proper clamp load. Achieving the correct clamp load is essential to ensure the assembly will withstand the working loads encountered in the application. Achieving the correct clamp load is key to ensuring an assembly does not come loose from the vibrations and working stresses that are encountered in the application.

Earnest Machine Products testing lab is fully equipped to test and verify all the critical feature of a hex nut to ensure proper performance.

Shown below are some of the key features that our lab sees from manufacturers that do not maintain the high quality standards.

Concentricity of threads to nut body: Centering the threads to the body of the nuts is essential for proper torque tension performance. Poor quality nuts have holes that are not tapped concentric to the hex body. Non-concentric tapped holes create added strain to the bolt during assembly.

Earnest Quality Poor Quality

Perpendicularity of threads to bearing face: Threads that are not tapped at a right angle to the bearing face will result in bending strain in the bolt which can result in premature failures.

Earnest Quality Poor Quality

Bearing Surface Smoothness: Rough bearing faces prevent proper clamp loads from being developed in the assembly.

Earnest Quality Poor Quality

Nut Form: Poorly formed hex corners cause wrench slippage and weaken the hoop strength of the nut.

Unique To Earnest:

Full line, course and fine thread
Large diameters
Hi –nuts
Left hand threads