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 6685-01-168-2916
NSN 5925-01-099-4702
NSN 5990-01-395-4194
NSN 2925-00-833-9466
NSN 5895-01-381-4442
NSN 5855-00-962-5792
NSN 5835-01-572-9308
NSN 5990-01-126-5824
NSN 5996-00-168-7651
NSN 6320-01-438-6280
NSN 5925-01-568-5248
NSN 4140-01-495-1466