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 5990-01-277-9753
NSN 5905-01-408-4526
NSN 5895-01-495-1169
NSN 6150-00-625-8031
NSN 6130-00-222-3907
NSN 5996-01-025-5683
NSN 5835-01-446-6065
NSN 6685-01-025-7422
NSN 5998-01-243-5585
NSN 5910-01-601-6033
NSN 6130-01-085-4230
NSN 5910-01-321-8060