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 5905-01-400-0963
NSN 5835-01-604-6337
NSN 5950-01-645-7971
NSN 7035-01-588-8175
NSN 6145-01-644-8675
NSN 6240-01-190-9523
NSN 5910-01-123-2082
NSN 6240-01-433-3648
NSN 5905-00-221-3346
NSN 2925-01-027-1293
NSN 5895-01-646-9559
NSN 5895-00-522-7935