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
Used on pacer special. 3a thread class right-hand oval head style 16 thread quantity per inch dia hole in shank 0.141:hole located 0.170 from end:added countersunk shaft centers 0.218 dia max depth 0.593 max csk 60 degrees plus/minus 0 degrees 30'to 0.540 dia both ends unjf thread series
