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 7035-01-231-2450
NSN 5915-01-142-0387
NSN 5895-01-410-9880
NSN 5985-01-168-8313
NSN 4140-01-008-2026
NSN 5910-00-248-0858
NSN 2925-01-267-1598
NSN 5855-00-688-9954
NSN 6145-01-459-0088
NSN 6150-01-353-3219
NSN 5945-00-079-0884
NSN 5990-01-463-5400