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 6110-01-263-3744
NSN 6135-00-519-1325
NSN 5990-01-143-2518
NSN 6135-01-265-1384
NSN 6105-00-868-9819
NSN 5975-01-391-5981
NSN 5895-01-154-8747
NSN 6610-01-326-0119
NSN 5835-01-226-2337
NSN 6240-01-539-8227
NSN 6320-00-500-4172
NSN 6135-01-529-8523