| COUNTERSINK ANGLE | 82.0 DEGREES NOMINAL |
| FASTENER LENGTH | 1.0 INCHES NOMINAL |
| HARDNESS RATING | 80.0 ROCKWELL B NOMINAL OVERALL |
| HEAD DIAMETER | 0.597 INCHES NOMINAL |
| HEAD HEIGHT | 0.191 INCHES NOMINAL |
| HEAD STYLE | FLAT COUNTERSUNK |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE II |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | 316 STAINLESS STEEL PHILLIPS FLAT HEAD SCREW |
| MATERIAL | STEEL COMP 316 OVERALL |
| MINIMUM TENSILE STRENGTH | 80000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.312 INCHES |
| SPECIAL FEATURES | SUPER-CORROSION-RESISTANT;5/16"-18 THREAD SIZE;1" LONG;FULLY THREADED;STANDARD FLAT HEAD PROFILE;DRIVE SIZE NO.4;PASSIVATED 316 STAINLESS STEEL;COARSE THREAD SPACING;PHILLIPS DRIVE STYLE;ROHS COMPLIANT;EXCELLENT RESISTANCE TO CHEMICALS AND SALT WATER;PASSIVATED FOR ADDED PROTECTION AGAINST OXIDATION AND CORROSION |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |