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 5915-01-338-9275
NSN 6145-00-539-9799
NSN 6110-00-812-0226
NSN 5930-01-522-9673
NSN 5925-01-600-0447
NSN 5910-01-515-8804
NSN 2925-00-611-6711
NSN 5925-01-511-9999
NSN 6610-01-152-2821
NSN 6145-00-213-9181
NSN 6320-01-250-0290
NSN 6320-00-636-0922