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 5925-01-477-6200
NSN 6610-00-941-0509
NSN 6220-01-226-1776
NSN 6220-01-215-2179
NSN 6645-01-364-0867
NSN 5975-00-280-7945
NSN 6620-00-827-1611
NSN 5996-01-459-8590
NSN 6105-01-226-8125
NSN 5935-01-227-2370
NSN 5965-01-323-0501
NSN 6685-01-564-3916