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 5950-01-012-1906
NSN 5975-00-738-0211
NSN 6320-00-593-0379
NSN 6220-01-013-9498
NSN 5985-00-269-5388
NSN 6150-01-513-9941
NSN 5905-01-088-8340
NSN 7035-01-290-7174
NSN 6645-01-633-1852
NSN 6105-00-280-2808
NSN 5895-01-541-4343
NSN 2925-00-899-4261