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 6645-01-010-3746
NSN 5910-01-268-9232
NSN 6130-00-277-7321
NSN 5835-00-005-2311
NSN 5930-01-530-3044
NSN 6320-01-311-3286
NSN 6150-01-316-6835
NSN 6685-00-230-4267
NSN 5975-01-027-0253
NSN 5999-01-603-6319
NSN 2925-01-146-0278
NSN 5930-01-597-2899