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 6685-00-886-9171
NSN 6130-00-196-3641
NSN 6135-01-304-8652
NSN 6130-01-170-5085
NSN 5990-01-334-8634
NSN 5855-01-231-4945
NSN 5905-01-533-4205
NSN 6130-00-392-4080
NSN 5945-01-321-4226
NSN 6130-00-941-1292
NSN 2925-01-422-1542
NSN 5910-01-076-6361