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 6620-01-087-4361
NSN 6220-01-207-0523
NSN 6130-01-411-6089
NSN 5975-00-845-6224
NSN 6145-01-608-1031
NSN 6620-00-144-7201
NSN 5990-01-647-8574
NSN 5930-01-359-5480
NSN 6610-00-061-7882
NSN 5975-01-112-3526
NSN 5945-01-537-0202
NSN 5996-00-477-6603