OZ-Gedney Type 1 Threaded Conduit Locknut, Material of Construction: Heavy Stock Steel, Finish: Zinc Plated, 1/2 IN Height, 6-11/16 IN Width, Size: 5 IN, 8 Threads Per Inch, Third Party Certification: UL File Number E-11853, CSA 057250 And 009795, Applicable Third Party Standards: UL 514B, CSA C22.2 No.18, Federal Specification W-F-408E, NEMA : FB-1, For Rigid Conduit And IMC