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 5975-00-218-0414
NSN 5998-01-453-1565
NSN 6685-01-661-3252
NSN 5985-00-181-8848
NSN 5945-01-009-6250
NSN 5895-01-118-1357
NSN 5985-01-352-8645
NSN 5855-00-237-4088
NSN 6240-01-610-2124
NSN 6130-01-326-7118
NSN 5920-01-605-9834
NSN 6240-00-583-3818