Spline Nuts are round fasteners with an internal spline designed to be used when threaded onto a splined shaft. The spline nuts can be located on the shaft by tightening set screws, and so can be used to locate a gear or other object on the shaft in a specific position.
Spline Nuts Diameters
Spline Nuts are available on the FCH Network with Imperial/US diameters that range from #8 to 1 7/8 and with Metric diameters that range from M8 to 1 7/8. The length of Spline Nuts is usually measured from the point to the underside of the head.