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 6645-01-644-1354
NSN 6220-01-007-9988
NSN 5935-01-592-4315
NSN 6130-01-213-0196
NSN 5960-01-170-4057
NSN 5975-01-246-4141
NSN 5950-00-278-1201
NSN 2925-01-445-4095
NSN 6150-01-360-6706
NSN 7035-01-349-4348
NSN 5965-00-338-4259
NSN 5999-01-468-5919