Rubber Nuts

Rubber nuts, also known as rawlnuts, have a brass threaded insert inside the bottom of a rubber sleeve. Rubber nuts are used for securing items in hollow materials, cavities or irregular sized holes.

Using rubber nuts

Machine screws are used with rubber nuts to fasten the object in question.

As the machine screw is tightened and the brass insert pulls up, the rubber sleeve is compressed and it bulges out on to the back of the substrate, creating a secure fixing by compression forces.

You should always use a metal washer in conjunction with a rubber nut.

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