Shop All Well Nuts
Well Nuts are removable rivet nuts made mostly out of EPDM rubber with a brass threaded portion on the inside. To install a weld nut, drill a hole and slide the weld nut into the hole with the flanged portion exposed. Then slide a machine screw of the correct size into the threading and tighten. As the machine screw is fastened, the rubber portion will deform and place a large amount of pressure on the bolt hole causing it to seal.
What Are Well Nuts Used For?
Well Nuts, also called rub nuts or rubber nuts, are extremely common in kayaks and other water-based applications to install something to the surface where leaking water may be a concern. Although they are also commonly referred to as Rawlnuts or Rawl Nuts, this is a proprietary name. Well nuts are mostly made from rubber with a brass internal threaded nut making them an ideal choice for fresh water and salt water environments. Well nuts are commonly used with bolts or machine screws to fasten two this materials together, or to anchor items to thin materials.
Benefits of Well Nuts
- Easy to install
- Easily removable
- Can be installed into blind holes
- Minimizes vibration and shocks
- Vibration isolation helps to prevent rattle and pull-out
- Can act as a buffer to prevent Galvanic Corrosion
- Forms a water-tight seal
- Safe for saltwater applications
Common Uses Include:
- Automotive racking systems
- Hardware in utility trucks
Well Nut Grip Range
Like any rivet nut, well nuts create a grip as a screw or bolt is screwed into the insert (like the mandrel of a blind rivet). The length of a well nut or any rivet nut is important to ensure that the fastener will work as intended. If the actual application is over or under the specified grip range, then the nut will not be able to exert the adequate amount of compressive force and will not function properly. The thickness of the two pieces of metal being fastened together should be calculated, with a little extra wiggle room for burrs or bends in the sheet metal.