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 6685-00-267-9480
NSN 5925-01-374-0538
NSN 5935-01-421-1802
NSN 5915-01-059-5729
NSN 2925-01-100-3694
NSN 6240-01-105-1399
NSN 6220-00-785-8525
NSN 5925-00-208-5637
NSN 6135-01-445-6589
NSN 6685-01-398-1097
NSN 6645-00-816-5337
NSN 5855-01-634-0259