W-F-408E, FEDERAL SPECIFICATION: FITTINGS FOR CONDUIT, METAL, RIGID (THICK-WALL AND THIN-WALL (EMT) TYPE) (20-DEC-1989) [S/S BY A-A-50553]

W-F-408E, FEDERAL SPECIFICATION: FITTINGS FOR CONDUIT, METAL, RIGID (THICK-WALL AND THIN-WALL (EMT) TYPE) (20-DEC-1989) [S/S BY A-A-50553]., This specification covers raintight, concrete tight, and miscellaneous fittings for rigid metal conduit and electrical metallic tubing. This document does not cover fittings designed specifically to meet the requirements of the National Electrical Code for use in hazardous locations or cast metal outlet bodies and floor boxes.