Nook Industries, Inc. Precision Locknut - Axial Locking MKR 130x3

The series MKR locknut design utilizes two radial grooves machined to provide an accordion-like cross section. The internal radial groove divides the thread of the locknut into two sections: locking section and clamping section. Depending on the locknut size, three to eight socket head screws are used to clamp the two sections together. By tightening the socket head screws, the thread clearance is eliminated providing a continuous contact along the entire thread length. This continuous contact provides high load carrying capacity, high shock resistance and high loosening torque. The two sections are designed so the deformation induced by the socket head screws is occurring only in the locking portion of the locknut without affecting the accuracy of the clamping portion. This series is produced with tolerance class ISO 4H machined threads and is available in sizes 10 to 200 mm bore.