CNF Clampnut

CNB.GIF

This series of CLAMP NUTS has the threads specified as FINE under the Unified system. These CLAMP NUTS better serve where a closer ratio is desired between the static strength of the shaft or spindle and the thread, where length of thread engagement is limited, where a smaller lead angle is desired, or where a thinner tubular wall for the external threaded member is desired. The external FINE threads have greater tensile stress area than comparable sizes with COARSE threads (about 10 percent stronger due to this greater cross section area). Thus FINE threads become very beneficial when resistance to stripping of threads equals or exceeds the tensile load carrying capacity of the externally threaded member. Lastly they can be more precisely adjusted because of their smaller helix angle.

This model is made of low carbon steel with a black oxide finish and blackened alloy steel socket head cap screws.

As with all precision retaining devices, care must be taken during assembly to assure premium performance. Please open and review our installation instructions for proper technique and best results.



Identification Thread
Outside Dia
(inches)
Face Dia
(inches)
Width
(inches)
Axial Load
(lbs)
Lockscrew
CAD
CNF3-32 10-32 0.625 0.406 0.281 1600 4-40 CAD
CNF4-28 .250-28 0.625 0.406 0.281 1900 4-40 CAD
CNF5-24 .312-24 0.688 0.469 0.281 2300 4-40 CAD
CNF6-24 .375-24 0.875 0.594 0.344 3500 6-32 CAD
CNF7-20 .437-20 0.938 0.656 0.344 3900 6-32 CAD
CNF8-20 .500-20 1.125 0.781 0.437 5400 10-32 CAD
CNF10-18 .625-18 1.313 0.922 0.437 6500 10-32 CAD
CNF12-16 .750-16 1.500 1.063 0.500 9400 1/4-28 CAD
CNF14-14 .875-14 1.625 1.188 0.500 10400 1/4-28 CAD
CNF16-12 1.000-12 1.750 1.313 0.500 11200 1/4-28 CAD
CNF16-14 1.000-14 1.750 1.313 0.500 11500 1/4-28 CAD
CNF18-12 1.125-12 1.875 1.438 0.500 12000 1/4-28 CAD
CNF20-12 1.250-12 2.063 1.625 0.500 13200 1/4-28 CAD
CNF22-12 1.375-12 2.250 1.719 0.563 16200 1/4-28 CAD
CNF24-12 1.500-12 2.375 1.844 0.563 16900 1/4-28 CAD
CNF32-12 2.000-12 3.000 2.469 0.625 23200 5/16-24 CAD

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