| CENTER HOLE SHAPE STYLE | ROUND |
| HOLE DIAMETER | 30.0 MILLIMETERS NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | F436M TYPE 1 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| NONDEFINITIVE SPEC/STD DATA | 30R SIZE |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | METRIC PLAIN WASHER |
| PERIPHERAL SHAPE STYLE | ROUND |
| SPECIAL FEATURES | NON-THREADED; MADE OF CARBON STEEL |
| SPECIFICATION/STANDARD DATA | B18.22M / ASME B18.240-2020 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM F1941 TYPE 5BT NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |