Abstract: A system includes a washer, a nut, a retainer structure, and a gasket. The washer has a bore extending between a distal end and a proximal end. A first section of the bore extends from the distal end to a shoulder portion. A second section of the bore extends from the shoulder portion to the proximal end. The shoulder portion defines an aperture. The nut is configured to be received in the first section of the bore. The nut includes a threaded bore configured to threadably engage a threaded shaft of a bolt. The retainer structure is configured to axially retain the nut in the first section of the bore of the washer. The gasket has a through-bore axially aligned with the bore of the washer and the threaded bore of the nut. The gasket is configured to be axially retained in the second section of bore of the washer.

Abstract: A system includes a washer, a nut, a retainer structure, and a gasket. The washer has a bore extending between a distal end and a proximal end. A first section of the bore extends from the distal end to a shoulder portion. A second section of the bore extends from the shoulder portion to the proximal end. The shoulder portion defines an aperture. The nut is configured to be received in the first section of the bore. The nut includes a threaded bore configured to threadably engage a threaded shaft of a bolt. The retainer structure is configured to axially retain the nut in the first section of the bore of the washer. The gasket has a through-bore axially aligned with the bore of the washer and the threaded bore of the nut. The gasket is configured to be axially retained in the second section of bore of the washer.

Abstract: A locknut comprising a metal nut including a threaded internal wall for engaging a threaded shaft; and a metal ring including an internal threaded wall defining a hole for engaging the threaded shaft. The ring comprised of a steel alloy. The threaded internal wall of the nut and the threaded internal wall of the ring being in general axial alignment when the ring is received by a bore of the nut. The ring has an elliptical configuration and is configured to distort to a circular configuration when the threaded shaft is engaged with the threaded internal wall of the nut and the threaded internal wall of the ring. The ring sized such that the stress in the ring when the ring is distorted to the generally circular configuration is less than the yield stress of the steel alloy. A thermal diffusion coating may be applied to the ring.