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 5975-01-114-7439
NSN 5985-01-495-1449
NSN 5930-00-186-9192
NSN 5895-01-248-7714
NSN 6240-01-104-5085
NSN 5905-01-250-3287
NSN 5925-01-221-8617
NSN 6650-01-588-4687
NSN 5855-01-644-8142
NSN 5945-00-275-0557
NSN 5965-01-485-4542
NSN 4140-00-187-6086