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 6320-01-476-7702
NSN 5975-01-388-3413
NSN 5835-01-601-3416
NSN 5990-00-309-0023
NSN 6145-00-889-8551
NSN 6650-00-103-3239
NSN 7035-01-045-7202
NSN 5905-01-393-6055
NSN 5985-01-472-2037
NSN 5895-00-138-3749
NSN 5998-01-021-7232
NSN 5985-01-240-9644