Sigma T-Nuts

 

In 1964 Sigma introduced and patented the first 4 prong T-Nut with the now familiar 8-sided base. Unlike the standard round base T-Nuts, the new Sigma T-Nuts could be fed efficiently and reliably by machine.  The 8-sided T-Nut base has become the standard configuration for T-Nuts inserted by machine.  Sigma Tool & Machine is one of the world's largest manufacturers and suppliers of T-Nuts for the upholstered furniture industry.


 

Today Sigma continues to manufacture and supply quality T-Nuts designed for machine insertion. Machine driven T-Nuts are available in the popular ultragrip style as well as step barrel T-Nuts in a variety of sizes, options and finishes


 

Sigma UltraGrip T-Nuts

 

Sigma Rivet T-Nuts

 

Torqloc T-Nuts

 

Sigma Strip Collated T-Nuts

 

Collated T-Nuts
 

T-Nut Barrel Options

 

T-Nut Finishes

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