A nut having 1 convex, spherical bearing surface and 6 flat sides. Items may have a removable collar. See also nut (1), plain, cone seat, hexagon.
NSN 4140-00-767-5350
NSN 6620-00-679-5830
NSN 5915-01-088-8128
NSN 6685-00-559-2742
NSN 5925-01-328-2053
NSN 6145-01-426-2931
NSN 4140-01-400-3610
NSN 5999-00-419-5363
NSN 6685-01-461-9339
NSN 5905-00-311-1103
NSN 5855-01-286-9928
NSN 6620-01-367-2597