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 6135-01-621-8546
NSN 6150-01-498-5407
NSN 6610-01-459-0601
NSN 5905-00-638-6776
NSN 6685-00-235-4594
NSN 7035-00-541-8516
NSN 2925-01-554-5246
NSN 5950-00-815-2819
NSN 6130-00-199-4210
NSN 7035-01-396-3343
NSN 5895-01-424-0311
NSN 5998-00-343-6815