CNC-A 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 aluminum (usually 2024) bright finished and blackened alloy steel socket thread cap screw.

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
CNC2-32A 8-32 0.625 0.406 0.281 1000 4-40 CAD
CNC3-24A 10-24 0.625 0.406 0.281 1100 4-40 CAD
CNC4-20A .250-20 0.625 0.406 0.281 1400 4-40 CAD
CNC5-18A .312-18 0.688 0.469 0.281 1600 4-40 CAD
CNC6-16A .375-16 0.875 0.594 0.344 2500 6-32 CAD
CNC7-14A .437-14 0.938 0.656 0.344 2700 6-32 CAD
CNC8-13A .500-13 1.125 0.781 0.437 3800 10-32 CAD
CNC10-11A .625-11 1.313 0.922 0.437 4600 10-32 CAD
CNC12-10A .750-10 1.500 1.063 0.500 6600 1/4-28 CAD
CNC14-9A .875-9 1.625 1.188 0.500 7300 1/4-28 CAD
CNC16-8A 1.000-8 1.750 1.313 0.500 7900 1/4-28 CAD
CNC18-7A 1.125-7 1.875 1.438 0.500 8500 1/4-28 CAD
CNC20-7A 1.250-7 2.063 1.625 0.500 9300 1/4-28 CAD
CNC22-6A 1.375-6 2.250 1.719 0.563 11400 1/4-28 CAD
CNC24-6A 1.500-6 2.375 1.844 0.563 11900 1/4-28 CAD

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