Well Nuts are far more than meets the eye. Its ability to distribute loads evenly and dampen vibrations makes it indispensable in scenarios where traditional fasteners might fall short. From automotive to marine, electronics to construction, this hidden gem of a fastener is a reliable choice. Well Nuts come in various sizes and configurations, catering to different load-bearing capacities and environments. As the nut is tightened, the rubber expands and forms a watertight seal, making it perfect for applications that require protection against moisture and dust. Its unique design allows it to be inserted into a pre-drilled hole in a wide range of materials, providing a secure and vibration-resistant fastening. In essence, it’s a rubber nut with a flanged base and a threaded brass insert. This unassuming rubber component has the power to revolutionise the way you secure objects and materials. At first glance, it might appear to be just a simple rubber grommet, but it is far more than that. So, what is a Well Nut?Ī Well nut, also called a rawlnut or a rubber nut, is a removable rivet nut or nutsert, comprised of an EPDM Neoprene nut and a brass insert nut.Ī Well Nut is a versatile fastening solution that often flies under the radar despite its remarkable functionality. However, they have their own “personality” and can be used for some applications where regular rivet nuts may not be ideal. Repairs to more than two adjacent oversize rivets, or replacing more than half the rivets with oversize rivets in any 10 inch length of pattern is prohibited.Compared with Rivet Nuts in other materials, which “shine on the stage” in the fastener world, Well Nuts seem less appreciated. Repair limitations: The combined oversize rivet hole repairs and oversize countersink repairs should be limited to a maximum of 20 percent of the rivets, or 10 rivets in a single rivet pattern, whichever is less. The term "next larger size" shall be defined as the next larger diameter for the application, but not to exceed 1/32 inch increments for sizes up to 1/4 inch diameter and 1/16 inch increments for sizes above 1/4 inch. Oversize countersinks: When countersinks are enlarged beyond specified tolerances, the next larger size rivet may be used, provided pitch and edge margin design requirements are maintained. Burrs may be removed from rivet holes by chamfering to a depth not to exceed 10 percent of the stock thickness, or 0.032 inch, whichever is less. Mating surfaces should be cleaned before parts are riveted together, all chips, burrs and foreign material must be removed from the mating surfaces. If piercing is used, all holes need be inspected for radial cracking. Piercing Only piercing tools which produce-true and clean holes, equivalent to acceptable drilled holes should be used. When drilling through more than one sheet, hold the sheets securely together so there is no misalignment of holes due to shifting or separation of the sheets. Extreme pressure shall not be applied and holes shall not be punched through with the drill.Ĭ. All holes shall be drilled normal (at 90 degrees) to the working surface.ī. Drilling Rivet holes should be drilled in accordance with the following recommendationsĪ.
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