Crouse-Hinds Myers Scru-Tite Insulated hub of trade size 2-1/2 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 3-3/4 Inch Dia x 2-7/32 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