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 6135-00-583-3966
NSN 6130-01-210-3368
NSN 4140-01-514-0709
NSN 6135-00-284-1406
NSN 6130-01-181-3373
NSN 5998-01-514-7741
NSN 5915-01-602-9324
NSN 6320-01-143-3597
NSN 5950-00-126-5842
NSN 6110-01-606-9749
NSN 5985-00-392-8078
NSN 5930-00-051-1334