Twin-Spin Serrated Free-Spinning Locknut

The SP-LOC® Twin-Spin, Serrated Locknut is offered in two options. The serrated locking elements can be located either on the bearing surface only, or on both nut faces. This locknut is available in American Standard and Metric; machine screw, hex-finished, and jam nuts.


Steel Grade 2-5-8, Monel, brass, bronze, aluminum alloys, and stainless steel


UNC, UNF or 8UN Series, Class 2B, 3B, left-hand thread, and Metric


Plain, zinc, cadmium, and other platings and coatings