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 6135-01-581-1039
NSN 6685-01-097-4048
NSN 5999-01-426-3213
NSN 5935-01-468-0129
NSN 6105-00-288-5872
NSN 5935-01-326-8585
NSN 6685-01-132-4637
NSN 2925-01-079-6229
NSN 6620-01-420-3386
NSN 5985-00-001-2563
NSN 2925-00-435-5604
NSN 6650-01-573-4044