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 5920-00-793-4653
NSN 6320-01-583-6809
NSN 5925-00-051-4892
NSN 2925-01-076-6128
NSN 5985-00-221-9051
NSN 5905-01-519-6287
NSN 5950-01-042-9106
NSN 5855-01-644-3271
NSN 6135-01-506-0759
NSN 5915-01-429-4307
NSN 2925-00-178-0940
NSN 6240-01-179-1189