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 5990-01-503-0194
NSN 6110-01-344-6885
NSN 5905-00-655-1982
NSN 6240-01-109-4680
NSN 5950-00-899-2376
NSN 5930-00-763-6302
NSN 5960-01-064-3292
NSN 7035-00-142-9076
NSN 5950-00-548-9523
NSN 5985-01-205-1234
NSN 5965-01-026-9865
NSN 5915-00-972-9916