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 6105-01-415-3314
NSN 6110-01-350-3449
NSN 5975-01-066-6171
NSN 5905-00-802-8689
NSN 5975-00-519-6871
NSN 6130-00-402-8545
NSN 5985-00-476-4573
NSN 6105-01-128-3153
NSN 5915-01-255-6907
NSN 6145-00-854-1892
NSN 5905-01-421-4421
NSN 6320-01-195-5583