CNC Clampnut

CNB.GIF

This series of CLAMP NUTS has threads specified as COARSE under the Unified system of threads designed unifying the original American National design and the United Kingdom Whitworth design for inch dimensioned threads. This unified system brought about general interchangeability of threads achieved through the standardization of thread form, diameter-pitch combinations and limits of size. Under the Unified system, however, the pitch diameter tolerance of the internal thread is uniformly 30% greater than that of the external thread. Thus the clamping does not align as squarely to the axis of the drive mechanism as does the bearing series.

There are, however, advantages of this coarse series: easier and faster assembly with less chance of cross threading, burrs and nicks from handling less liable to affect assembly, less likely to seize in temperature applications and joints where corrosion may form, and less prone to strip when threaded into lower strength materials.

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
CNC2-32 8-32 0.625 0.406 0.281 1200 4-40 CAD
CNC3-24 10-24 0.625 0.406 0.281 1400 4-40 CAD
CNC4-20 .250-20 0.625 0.406 0.281 1700 4-40 CAD
CNC5-18 .312-18 0.688 0.469 0.281 2000 4-40 CAD
CNC6-16 .375-16 0.875 0.594 0.344 3100 6-32 CAD
CNC7-14 .437-14 0.938 0.656 0.344 3400 6-32 CAD
CNC8-13 .500-13 1.125 0.781 0.437 4800 10-32 CAD
CNC10-11 .625-11 1.313 0.922 0.437 5700 10-32 CAD
CNC12-10 .750-10 1.500 1.063 0.500 8200 1/4-28 CAD
CNC14-9 .875-9 1.625 1.188 0.500 9100 1/4-28 CAD
CNC16-8 1.000-8 1.750 1.313 0.500 9900 1/4-28 CAD
CNC18-7 1.125-7 1.875 1.438 0.500 10600 1/4-28 CAD
CNC20-7 1.250-7 2.063 1.625 0.500 11600 1/4-28 CAD
CNC22-6 1.375-6 2.250 1.719 0.563 14200 1/4-28 CAD
CNC24-6 1.500-6 2.375 1.844 0.563 14900 1/4-28 CAD

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