NM BUSHING

NM BUSHING (Product Description)

A 1/2-inch non-metallic (NM) bushing is an insulating plastic bushing used to protect wires or cable from abrasion where they pass through the end of conduit or a fitting. It is commonly pressed onto EMT, rigid, IMC, or PVC conduit, depending on the specific bushing style.

Product Description

This fitting provides a smooth insulated edge at the end of a raceway so wire insulation does not get cut or rubbed by sharp conduit or fitting edges during pulling or long-term vibration.

Although many electricians call these “NM bushings” in the field, they are often actually insulating conduit bushings used for conductor protection—not specifically for NM cable. An example common model is Arlington EMT50.

Key Specifications

• Type: Insulating / non-metallic bushing
• Material: Plastic / nylon / polypropylene
• Mounting: Press-on / snap-on
• Function: Wire/cable abrasion protection

Key Features

• Protects wire insulation from sharp edges
• Quick push-on installation
• Non-conductive plastic construction
• Holds firmly during cable pulling
• Common low-cost conductor protection fitting

Typical Applications

• Ends of EMT sleeves protecting NM cable
• Conduit stubs through framing
• Low-voltage/data cable raceways
• Junction box pass-through protection
• Retrofit conductor protection on exposed raceway ends