NAS1291 Description
MS21042 / NAS1291 Series Specifications Nuts, Self-locking, 450°, Reduced Hexagon, Reduced Height, Ring Base, Non-Corrosion Resistant Steel 35 Size Dash No. nuts dash size 7 and larger use NAS1291 prefix, stainless steel nuts use NAS1291C designation. (a) Threads in accordance with MIL-S-7742 before lubrication (b) Bearing surface shall be square with pitch diameter within X when measured in accordance with...