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 5990-01-027-8260
NSN 5990-00-644-3365
NSN 5960-00-182-7375
NSN 5915-01-509-0639
NSN 5999-00-861-2812
NSN 6105-00-822-0365
NSN 5998-01-224-5542
NSN 6610-01-367-1640
NSN 6685-01-240-3752
NSN 5915-01-476-7124
NSN 5965-01-222-1420
NSN 4140-01-210-2212