Used on AGM-86. 2g thread class left-hand 6 thread quantity per inch nut, barrel-hole drilled at one end-hole center .22 from center, .125-.130 dia hole 1.0 deep .2500-28 unf-3b min compl thd. 20 per hdbk h-28 ms 15001-1, two clearance holes .41 from each end to hole center .125-.129 dia hole drilled thru cadmium surface treated