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 5975-01-657-5713
NSN 5930-01-471-0862
NSN 6645-01-169-2254
NSN 5895-00-419-4514
NSN 2925-01-187-5480
NSN 6240-01-616-6813
NSN 6130-01-323-1295
NSN 5985-01-112-5307
NSN 6620-00-955-0330
NSN 6135-01-045-1504
NSN 5935-00-942-0320
NSN 7035-01-322-8180