Used on F-15I. 2a thread class right-hand 0.240" thread length pan head style 40 thread quantity per inch altered item from MS51957-20, item is threaded under head 0.240 in., unthreaded portion past the threaded part is 0.640 in. passivate surface treated unc thread series
Used on f100pw100. 3a thread class right-hand 0.323" thread length double hexagon w/hole head style 28 thread quantity per inch requested name - bolt unjf thread series