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 7035-01-254-3606
NSN 5999-01-417-2123
NSN 4140-00-018-0187
NSN 5960-01-031-6891
NSN 5998-01-428-7824
NSN 6685-00-403-1226
NSN 5915-00-269-2748
NSN 5930-01-464-0583
NSN 6645-01-248-8033
NSN 5905-00-617-3826
NSN 5998-01-281-3747
NSN 6320-01-643-0850