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 2925-00-234-7918
NSN 5920-01-179-5289
NSN 6130-01-529-9483
NSN 5930-00-887-9743
NSN 5895-01-424-4241
NSN 6145-00-926-8323
NSN 6130-01-362-8668
NSN 6645-01-658-5624
NSN 6240-00-897-1209
NSN 5950-01-114-5858
NSN 5905-00-271-8523
NSN 5915-01-032-7614