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 6685-00-720-3525
NSN 5915-01-054-3788
NSN 5975-00-141-8513
NSN 5950-00-601-9566
NSN 5998-01-459-7552
NSN 5895-01-482-3415
NSN 6145-00-213-9179
NSN 2925-01-643-2967
NSN 5990-01-023-3307
NSN 5835-01-111-9838
NSN 6130-00-168-9356
NSN 6145-00-269-3524