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 5930-01-123-9688
NSN 6130-00-620-7872
NSN 6620-01-076-8706
NSN 2925-00-555-8836
NSN 5835-01-464-2662
NSN 5920-01-540-9152
NSN 5975-00-045-9819
NSN 5985-01-622-4126
NSN 6110-01-347-6761
NSN 5915-00-120-1152
NSN 5905-01-288-3216
NSN 6150-01-209-6842