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 5990-00-935-5610
NSN 6145-00-421-0968
NSN 5999-01-024-8217
NSN 5998-00-570-7328
NSN 6650-01-207-0829
NSN 5950-00-996-5255
NSN 5915-01-426-8862
NSN 5915-00-565-9964
NSN 6135-00-203-9645
NSN 5925-00-660-3892
NSN 5950-01-601-4697
NSN 6645-01-160-4256