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 6620-01-217-3216
NSN 5935-01-554-9218
NSN 6685-00-816-0656
NSN 5855-00-198-3197
NSN 5920-01-408-9840
NSN 5999-01-025-9717
NSN 6320-00-908-6841
NSN 5855-01-602-9653
NSN 6240-01-642-8377
NSN 5930-00-826-8775
NSN 2925-00-881-3770
NSN 5996-01-441-1594