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 6110-00-738-0420
NSN 5855-01-584-6138
NSN 5965-00-161-1512
NSN 5975-00-097-9714
NSN 5985-01-391-7122
NSN 5975-01-089-9399
NSN 6135-00-246-0324
NSN 5985-00-084-7414
NSN 6645-01-575-2297
NSN 6130-00-812-6175
NSN 5855-01-459-9254
NSN 5985-01-283-4452