Crouse-Hinds Myers™ Scru-Tite® Insulated hub of trade size 3 inches, is perfect for use in the termination of electrical circuits through wall of the enclosure. This hub featuring Lexan® insulation, has zinc construction and natural finish for longer service life. It measures 4-3/8 Inch Dia x 2-5/16 Inch. The strong oversize nut with radial serrations ensures flush installation and positive grounding. Hub with male NPSM connection, has captive O-ring gasket that is resistant to cor