| DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY | 1.175 INCHES MINIMUM AND 1.185 INCHES MAXIMUM |
| HARDNESS RATING | 62.0 ROCKWELL A MAXIMUM |
| HOLE DIAMETER | 2.588 INCHES MINIMUM AND 2.598 INCHES MAXIMUM |
| INTERNAL STRAIGHT KEY WIDTH | 0.308 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |
| INTERNAL KEY QUANTITY | 2 |
| OUTSIDE DIAMETER | 3.235 INCHES MINIMUM AND 3.245 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL THICKNESS | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| STYLE DESIGNATOR | KEY |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS2481 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE OVERALL |