| CENTER HOLE SHAPE STYLE | ROUND |
| CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| HOLE DIAMETER | 10.50 MILLIMETERS MINIMUM AND 10.71 MILLIMETERS MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | BSI BS970 GRADE 070-20 NATIONAL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL |
| PERIPHERAL SHAPE STYLE | ROUND |
| OVERALL DIAMETER | 29.50 MILLIMETERS MINIMUM AND 30.50 MILLIMETERS MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | BS 1706 ZN3 NATIONAL SPEC SINGLE TREATMENT RESPONSE |
| SURFACE TREATMENT | ZINC |
| THICKNESS | 2.00 MILLIMETERS MINIMUM AND 2.50 MILLIMETERS MAXIMUM |