SPLINE PRESS NUTS

Spline-Type press nuts (carbon-steel and non-magnetic stainless-steel) are designed to provide wear resistant, strong threads of Class 2B MIL-S-7742 for plastic and non-ductile materials such as glass-composite boards, epoxies, polycarbonates, nylon and paper as well as for aluminum and zinc castings.
 
The torque resisting splines literally cut their way down into the mounting material, biting in for torque resistance and providing a holding collar against pull-out forces. The specially engineered spline bevels minimize destructive compression forces normally developed on entry, which can fracture non-ductile brittle materials.
 
Push-out and torque-out values for a 66490 press nut in glass epoxy laminate are 100 lbs., and 20 inch lbs. respectively.
 
Steel inserts: for use in low carbon steels that are 1/2 hard or softer and for stainless steel in the annealed condition.
 
Stainless steel inserts: for use in most aluminums or in low carbon steels that are 1/4 hard or softer.
 
The Cadmium Plate Finish (7) for Carbon Steel and the Passivate Finish (12) for Stainless Steel is recommended.
 
Parts designed for material thickness .060 and up.