Fastener Data - 1. Nylon Patching & locking Eslok. When the fastener is assembled onto a mating thread, the patch forces the threads of the fastener to be wedged tightly against the mating thread, providing resistance to loosening. The amount of nylon applied is controlled and is designed to ensure a good lead- in and provide a gradual development of locking torque to pre- determined specifications. The patch when applied is permanently fused onto the screw thread of the fastener and increases the prevailing removal torque by acting as a wedge, allowing the screw to be locked in any position upon assembly. This process provides excellent vibration resistance and torque performance for all applications requiring controlled loading, re- usability and eliminating the need for secondary locking devices and hand- applied liquid adhesives. Available either as 1. Nylon patches can be applied to a range of headed fasteners, studs, and plugs in steel, aluminium, stainless steel or brass. Prevailing torque differentiates a locknut from a free spinning nut based on a value of how much torque is required during installation before clamp loading. For example, on a nylon-insert nut, it is the torque needed to overcome the resistance of the nylon dragging. Example Calculation - Inch/Lb Units Presented below are the results from TORQUE for a 1/2' UNF bolt with a nylon thread patch that creates a prevailing torque. Prevailing torque design can be optimized in accordance with the mechanical structure Prevailing torque and coating locations can be tailored. ND Patch Hi-Temp is an prevailing torque locking mechanism for fasteners which can withstand temperatures up to 500 degrees Fahrenheit. ND Patch Hi-Temp can be applied to internal or external threads of almost any size. Long-Lok Fasteners 5 Plastic Wedging Material ing the fastener a prevailing torque-type. Note how the plastic forces the opposite side of the male threaded fastener to wedge tightly against the previously open thread spaces. The material additive, usually in the.
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