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 5910-01-447-1699
NSN 6110-01-626-1304
NSN 6110-01-510-0762
NSN 2925-01-508-4138
NSN 5950-01-105-3765
NSN 5965-01-012-1065
NSN 6645-01-512-2034
NSN 6105-01-099-8111
NSN 6220-00-266-8222
NSN 6145-01-565-3201
NSN 5999-01-599-3180
NSN 6645-01-389-8312