A nut, flat on top and bottom, having 4 flat sides. 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 6110-01-424-7014
NSN 5998-01-199-3957
NSN 5835-01-101-5857
NSN 5996-01-319-6698
NSN 2925-01-345-9439
NSN 7035-00-533-4464
NSN 6150-00-709-3538
NSN 5965-01-365-5813
NSN 7035-00-620-6835
NSN 6130-00-942-8775
NSN 5965-01-488-4009
NSN 5965-01-142-8044