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 5996-01-475-4694
NSN 5835-01-398-3859
NSN 5920-00-050-0714
NSN 5975-00-862-2495
NSN 5835-00-918-8169
NSN 2925-01-432-8452
NSN 6620-00-925-8435
NSN 6240-01-335-2622
NSN 7035-01-222-0729
NSN 5985-00-960-4595
NSN 6150-01-025-5292
NSN 5905-00-728-1846