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 5905-00-104-7235
NSN 6105-00-907-8170
NSN 6650-00-164-7480
NSN 6110-00-281-3676
NSN 5960-00-423-7842
NSN 6220-01-162-6892
NSN 6135-01-475-2428
NSN 5998-00-174-5034
NSN 6610-00-994-0190
NSN 5930-01-089-1700
NSN 6320-01-442-8604
NSN 5999-01-179-5149