A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 6150-00-636-8938
NSN 5965-01-076-9799
NSN 5999-00-514-3388
NSN 6110-00-245-1814
NSN 7035-01-179-1739
NSN 7035-00-205-8739
NSN 5945-01-463-3569
NSN 5999-01-406-3489
NSN 6610-01-320-6628
NSN 6320-01-246-4390
NSN 5985-01-043-7927
NSN 5930-01-537-1167