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 7035-01-528-5527
NSN 6685-00-946-4617
NSN 5945-01-071-5231
NSN 6610-01-322-4331
NSN 6610-01-136-7836
NSN 5998-01-027-5174
NSN 5998-01-171-1004
NSN 5920-00-452-0963
NSN 6220-01-253-0380
NSN 6645-01-383-6514
NSN 6610-01-172-4041
NSN 5950-00-622-5227