| CENTER HOLE SHAPE STYLE | ROUND |
| CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| HOLE DIAMETER | 17.21 MILLIMETERS MINIMUM AND 17.71 MILLIMETERS MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | BS EN ISO13000 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | DISC |
| PERIPHERAL SHAPE STYLE | ROUND |
| OVERALL DIAMETER | 25.15 MILLIMETERS MINIMUM AND 25.65 MILLIMETERS MAXIMUM |
| THICKNESS | 0.64 MILLIMETERS MINIMUM AND 0.89 MILLIMETERS MAXIMUM |