| OUTSIDE DIAMETER | 3.980 INCHES MINIMUM AND 4.020 INCHES MAXIMUM |
| SPECIAL FEATURES | TAB NOT TO OVERLAP ID |
| STYLE DESIGNATOR | KEY |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ROYAL ORDNANCE (NOTTINGHAM),DD/TS/0107/86 GROUP 1004(A) MFR REF SINGLE TREATMENT RESPONSE |
| SURFACE TREATMENT | PHOSPHATE |
| DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 1.750 INCHES NOMINAL |
| EXTERNAL KEY QUANTITY | 1 |
| EXTERNAL PREBENT KEY WIDTH | 0.350 INCHES MINIMUM AND 0.390 INCHES MAXIMUM |
| HOLE DIAMETER | 3.180 INCHES MINIMUM AND 3.220 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | ROYAL ORDNANCE (NOTTINGHAM),DD/TS/0107/86 GROUP 1(A) MFR REF SINGLE MATERIAL RESPONSE |
| MATERIAL THICKNESS | 0.350 INCHES MINIMUM AND 0.040 INCHES MAXIMUM |
| III MATERIAL | STEEL |