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 7035-01-596-9396
NSN 4140-00-529-3573
NSN 6240-01-418-5021
NSN 6240-01-332-9214
NSN 6610-01-227-1692
NSN 5945-01-151-7457
NSN 6220-01-089-3539
NSN 5855-01-154-1402
NSN 6685-01-519-2359
NSN 5960-01-391-4701
NSN 6220-00-205-2040
NSN 6240-01-371-3020