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 5920-01-516-7943
NSN 2925-00-188-5003
NSN 5910-00-773-6509
NSN 6685-01-546-7992
NSN 6135-00-862-5736
NSN 6645-01-047-3026
NSN 5920-01-411-5512
NSN 5965-01-249-6349
NSN 6645-01-550-4586
NSN 6620-00-481-4210
NSN 5996-01-452-4386
NSN 6220-01-565-8177