Conduit Locknut; Trade Size 5 Inch; Diameter 6-1/2 Inch; Thickness 13/32 Inch; Material Zinc Electroplated Steel; Installation Threaded; Standard Package 5; Approval UL 514B, UL (Canada and US), CSA; ROHS Compliant; Applicable Standard Federal Specification A-A-50553, NEMA FB-1; Application Fasten Conduit to Opening in a Box or Enclosure