The large end is slipped over the cast hub and the set screws tightened; the fixture stem is slipped through the small end and threaded securely into the cast hub; the set screws in the small end are then tightened, thereby preventing the stem from turning
Permits support of fixture from conduit hub of a hazardous location outlet body
Standard materials
Feraloy iron alloy with electrogalvanized and aluminum acrylic paint