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 5965-01-554-9501
NSN 5985-00-946-8530
NSN 6220-00-939-8609
NSN 6610-01-369-7306
NSN 5895-00-035-8813
NSN 6620-01-020-4526
NSN 5999-01-367-9855
NSN 5998-01-541-4376
NSN 5895-01-421-4487
NSN 5996-01-256-1083
NSN 5960-01-449-1310
NSN 5925-00-204-5895