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 6145-01-054-6022
NSN 5930-01-586-9837
NSN 6685-01-547-9081
NSN 6240-01-070-6028
NSN 5990-01-413-2405
NSN 5915-01-196-6016
NSN 5915-00-300-3853
NSN 6610-01-376-9199
NSN 2925-01-381-5307
NSN 6620-00-578-5851
NSN 6620-00-585-5443
NSN 5930-01-130-4582