A screw insulator can also be known as a shoulder washer.

The screw insulator is designed to insulate screws, rivets or wire from an assembly.

Features and Benefits of a screw insulator

• Thermally insulate a screw from making metal to metal contact

• Reduce Vibration

• Act as Spacers and Guides

• Are Strong and Corrosion Resistant

• Can be Used as Seal in Some Applications

Why and when to use a screw insulator?

Screw insulators can be inserted into a housing to provide a bearing surface for rotary applications.

The flange on the screw insulator is used to locate the bushing when it is installed or to provide a thrust bearing surface.

Screw Insulators are used to prevent heat flow through the screw to other parts of the thermal assembly.