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 6685-00-177-6491
NSN 5996-00-444-4333
NSN 6240-01-355-4425
NSN 6145-01-108-3888
NSN 5925-00-627-2011
NSN 5965-01-026-1125
NSN 5975-00-226-1167
NSN 5855-00-987-1171
NSN 5998-00-498-8128
NSN 6685-01-625-8669
NSN 6150-00-288-6245
NSN 5950-01-595-7627