Used on oil filter and adaptor 454/502 mag mpi engine gen vi. right-hand hexagon head style 18 thread quantity per inch screw (5/16-18 x 1/2 in) unc thread series
Used on aa49e-27, h60s. round head style setscrewflat next higher assembly 3392AS1522, 3392AS1521, 3992AS1518; sed on AA49e-27, mh-60s/MI97 oxide surface treated
Used on 3895-01-610-0184. right-hand 24.0mm thread length flat countersunk head style countersunk socket head cap screw material grade 8.8 m thread series
3a thread class right-hand 0.240" thread length flat chamfer head style 20 thread quantity per inch letter "d" indicates retainer with shank length R1=0.144". item has lead point passivate surface treated unc thread series