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 5965-01-633-8849
NSN 6110-01-105-5587
NSN 6135-00-284-1406
NSN 5999-01-113-3975
NSN 5910-01-411-0241
NSN 5975-01-232-0100
NSN 2925-01-430-4206
NSN 6320-01-219-5174
NSN 6150-01-185-1862
NSN 6685-00-527-9335
NSN 5998-01-468-6606
NSN 6240-01-485-0008