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 6320-01-377-5701
NSN 5915-01-420-4370
NSN 5998-01-352-1693
NSN 5895-01-322-8176
NSN 5905-00-375-6342
NSN 6220-01-593-7209
NSN 5920-01-122-6303
NSN 5950-01-503-2592
NSN 5950-00-839-5015
NSN 5905-00-755-4953
NSN 6645-01-122-9430
NSN 6145-00-829-7469