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.)
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 2925-00-816-8765
NSN 4140-00-330-5841
NSN 5975-01-139-4128
NSN 6645-01-222-5468
NSN 2925-01-172-9209
NSN 6105-00-823-6506
NSN 6620-01-519-7234
NSN 5998-00-290-5511
NSN 6110-01-177-3697
NSN 6320-01-345-5817
NSN 6685-01-391-5316
NSN 5975-01-437-6224