NI Retaining Nut

NAN.GIF

This series of locknuts with the National Fine Thread Series with 16 threads per inch made to Class 3B tolerances is designed to be used with bearings and other power transmission components with fractional inch bores as well as by manufacturers preferring not to use the SAE-AFBMA series of locknuts which was an inch modification of metric locknuts early in the twentieth century.

Much heavy duty equipment is designed with this series of the BHI self locking series where the WI lockwasher need not be used. Construct ion equipment, metal cutting and metal forming machinery, mining equipment, conveyors, crushers, shipboard machinery, turbines and many other applications where the load is great and with much more shock and vibration these heavier nuts are well suited.

Most importantly, it is a locknut to use when you wish for a good ground floor inch design with the superiority of fine threads and lockwashers.



Identification Thread
Outside Dia
(inches)
Face Dia
(inches)
Width
(inches)
Axial Load
(lbs)
Lockwasher
CAD
NI-01 .750-16 1.500 1.188 0.385 14100 WI-01 CAD
NI-02 .875-16 1.625 1.313 0.385 15600 WI-02 CAD
NI-03 1.000-16 1.750 1.438 0.385 16900 WI-03 CAD
NI-04 1.125-16 1.875 1.563 0.385 18100 WI-04 CAD
NI-05 1.250-16 2.000 1.688 0.510 25500 WI-05 CAD
NI-06 1.375-16 2.250 1.938 0.510 27600 WI-06 CAD
NI-07 1.500-16 2.250 1.938 0.510 28000 WI-07 CAD
NI-08 1.625-16 2.500 2.188 0.510 31400 WI-08 CAD
NI-09 1.750-16 2.625 2.313 0.510 32500 WI-09 CAD
NI-10 1.875-16 2.750 2.438 0.510 33600 WI-10 CAD
NI-11 2.000-16 3.000 2.688 0.510 37200 WI-11 CAD
NI-12 2.250-16 3.250 2.875 0.635 49000 WI-12 CAD
NI-13 2.500-16 3.500 3.125 0.635 51300 WI-13 CAD
NI-14 2.750-16 3.750 3.375 0.635 53200 WI-14 CAD
NI-15 3.000-16 4.000 3.625 0.635 55000 WI-15 CAD
NI-16 3.250-16 4.500 4.000 0.760 78100 WI-16 CAD
NI-17 3.500-16 4.750 4.250 0.760 80400 WI-17 CAD
NI-18 3.750-16 5.250 4.750 0.760 92300 WI-18 CAD

This web page and all information contained 2017, Whittet-Higgins Co.

Whittet-Higgins Home