Hubbell Raco 1192B4 — a 1/2-inch rigid steel locknut:

Specifications

• Catalog Number: 1192B4
• Trade Size: 1/2 inch
• Material: Steel (Alloy Steel)
• Finish: Zinc electroplated for corrosion resistance
• Dimensions:
  • Width: 1.125 in
  • Thickness: 0.098 in
  • Weight: ~0.011 lb
• Thread Type: Unified National Coarse (UNC), right-hand, fully threaded
• Certifications: Not UL listed
• Pack Size: Commonly sold in 4-packs or bulk quantities

Key Features

• All-steel construction ensures mechanical protection for the raceway
• Zinc electroplated for enhanced corrosion resistance
• Locking tangs provide a secure connection to boxes or enclosures
• Non-UL listed — intended for dry locations only
• Available in trade sizes from 1/2 inch to 6 inches 

Applications

• Used to secure threaded rigid or IMC conduit to junction boxes or enclosures
• Can also be used to secure the threaded end of a conduit connector inside a box
• Ideal for commercial, industrial, and residential electrical installations
• Suitable for dry locations only