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: Nuts of iron or steel
NSN 4140-01-491-3882
NSN 5975-00-711-8805
NSN 4140-00-243-6664
NSN 5910-01-607-8582
NSN 5950-01-357-1089
NSN 5998-01-323-0216
NSN 6135-01-579-3534
NSN 5965-01-088-5414
NSN 6150-01-396-9538
NSN 5925-00-333-3567
NSN 5990-00-155-2306
NSN 5996-01-621-5041