cross recessed raised countersunk oval head screw

answer to someone Blending plant Bulkowo cargo-transport plane clock edge conversion of chair forms encopretic hogbacked floor Ogcocephalidae overpressure thin-layer chromatography pisonias plasma fibrinogen principal isobaric surfaces reap where one has not sown spasmings steinman torque balancing device total pipe-line mileage triode valve very low frequency jammer