Phillips pan heads are very popular and are available in a variety of sizes. We recommend using this driver type, since it offers excellent control. Offered as commercial items as well as MS3212 and MS3213, that meets military requirements. ZAGO’s MS3212/MS3213 parts are time-tested and pressure tested. In fact, ZAGO is the only manufacturer of sealing screws capable of performing NASM pressure testing. We are proud of our ability to meet the exacting needs of our military which in turn enables our customers to support our military in its mission of securing our defense.