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 5975-01-160-7993
NSN 5960-01-500-6615
NSN 5930-01-644-8794
NSN 6320-01-451-0821
NSN 6685-01-142-0943
NSN 5945-00-252-5680
NSN 6145-00-763-6077
NSN 5990-01-481-3080
NSN 5965-01-392-1761
NSN 5996-01-251-1149
NSN 5960-01-406-3672
NSN 6130-00-140-0709