Castle Nuts

Lock nut, also referred to as a nylon-insert lock nut, polymer-insert lock nut, or elastic stop nut, is a kind of locknut with a nylon collar insert that resists turning.

The plastic insert is placed at the end of the nut, with an inner diameter (ID) slightly smaller than the major diameter of the screw. The insert deforms elastically over the threads of the screw, without having threads in turn cut into it. The nylon insert locks the nut by friction against the screw under the applied radial compressive force. Nyloc nuts retain their locking ability up to 250 °F (121 °C)

Castle Nuts DIN-935

Castle nuts are a type of a nut with slots at one end of the nut. These slots or notches at one end of the nut give it the appearance of a medieval castle. They are also called slotted nuts or castellated nuts.

They are used in conjunction with a split (or cotter) pin to prevent the nut from loosening. The pin is inserted through the slots into a hole in the screw on which the nut is fixed. This locks the nut in place.

Castle Nuts are available in Stainless Steel A2 and A4 as per DIN 935.

DIN-935 Castle Nut SS-304 A2 B4C26 – Download Datasheet
DIN-935 Castle Nut SS-316 A4 B6C26 – Download Datasheet