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 6105-00-880-3339
NSN 5965-01-497-0465
NSN 5930-01-388-4586
NSN 7035-01-599-9287
NSN 6150-00-067-5244
NSN 7035-00-946-2642
NSN 6150-00-168-8540
NSN 6110-01-133-8343
NSN 5905-01-025-0704
NSN 5915-01-459-8059
NSN 6610-00-216-6538
NSN 5985-01-464-9610