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 5965-01-463-2815
NSN 5905-01-434-1821
NSN 5990-00-552-1611
NSN 5855-00-107-7993
NSN 6145-01-418-7017
NSN 5985-01-406-7651
NSN 6130-00-138-0649
NSN 5975-00-924-9927
NSN 5975-00-955-2224
NSN 6645-01-435-2996
NSN 6320-00-841-2279
NSN 5905-01-142-8665