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 5990-01-408-6554
NSN 5920-01-425-5241
NSN 5996-00-925-1953
NSN 5965-01-354-4387
NSN 6240-01-534-4007
NSN 6220-00-420-6306
NSN 6135-00-274-4035
NSN 5999-01-447-0993
NSN 6135-01-598-9890
NSN 6610-00-840-6187
NSN 5990-00-292-5017
NSN 6650-01-420-6572