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 6105-00-912-7345
NSN 6135-00-885-6003
NSN 6320-01-292-6635
NSN 5920-01-100-3018
NSN 6130-01-015-6835
NSN 5975-00-877-4876
NSN 5895-01-123-5542
NSN 6240-00-433-2707
NSN 5910-01-353-5338
NSN 5996-01-106-5146
NSN 5985-00-624-4983
NSN 5915-01-025-0868