| HOLE DIAMETER | 20.30 MILLIMETERS MINIMUM AND 21.10 MILLIMETERS MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | WILLIAM FAIREY LTD SPEC W.F.E.L.S 720 CLASS G MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL THICKNESS | 4.30 MILLIMETERS MINIMUM AND 4.70 MILLIMETERS MAXIMUM |
| MATERIAL | STEEL OVERALL |
| OUTSIDE DIAMETER | 30.50 MILLIMETERS MAXIMUM |
| OVERALL HEIGHT | 9.00 MILLIMETERS NOMINAL |
| STYLE DESIGNATOR | SPLIT HELICAL-RIGHT HAND |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DEF STAN 03-20 NATIONAL STD/SPEC 1ST TREATMENT RESPONSE AND YELLOW, DEF SPEC 130 NATIONAL STD/SPEC 2ND TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC AND PASSIVATE OVERALL |