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 4140-01-378-5190
NSN 5935-00-144-8017
NSN 6610-01-250-9327
NSN 5985-00-931-4958
NSN 5905-00-925-2851
NSN 5910-00-175-1165
NSN 6105-01-057-2794
NSN 5930-01-334-4395
NSN 5855-01-528-8776
NSN 5945-01-100-4818
NSN 6645-00-973-0178
NSN 6135-01-540-2403