Square nut; heavy
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 6650-01-431-9625
NSN 6150-01-105-1764
NSN 6220-01-056-4874
NSN 6150-01-388-9544
NSN 6645-01-627-8040
NSN 5925-01-411-6028
NSN 6130-01-206-4032
NSN 5985-01-560-3799
NSN 6220-00-949-6672
NSN 7035-00-922-5700
NSN 5920-01-326-1399
NSN 6145-01-461-9282