| BOTTOM RECESS ANGLE | 89.5 DEGREES MINIMUM AND 90.5 DEGREES MAXIMUM |
| BOTTOM RECESS DIAMETER | 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM |
| HOLE DIAMETER | 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM |
| MATERIAL THICKNESS | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM |
| MATERIAL | ALUMINUM ALLOY 5052 OR ALUMINUM ALLOY 2024 OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER FLAT, TENSION BOLT, CHAMFERED |
| STYLE DESIGNATOR | RECESSED BOTH SIDES |
| TOP RECESS ANGLE | 89.5 DEGREES MINIMUM AND 90.5 DEGREES MAXIMUM |
| TOP RECESS DIAMETER | 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM |