3a thread class right-hand 0.438" thread length dished hexagon head style 6.312" grip length 24 thread quantity per inch cadmium surface treated unf thread series
Used on m109 howitzer family. 3a thread class right-hand 1.250" thread length fillister head style 24 thread quantity per inch cadmium fastener surface treated unf thread series
3a thread class right-hand dee head style 28 thread quantity per inch includes two shoulders on shank 0.562 in.long; dia.0.250 in.; 0.688 in.long; dia.0.250 in.; acft model HU25a ATF3-6 engine second stage turbine unf thread series