Screw for intake engine 302 1968 - forward (also suitable for 289).
Thread: 5/16 "-18.
Length: 2 "(= 50.8mm approx).
Quality: Grade 8.
Skull: ½ "(key)," FO "marked in the skull, FoMoCo's own label = original version.
Other: Untreated.
Consumption:302 8pcs (added 4pcs bolts & 4pcs nut).
302 BOSS 8pcs (added 4pcs bolts & 4pcs nut) Can be 3/8 "= coarse screw.