| HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM |
| HOLE DIAMETER | 0.381 INCHES MINIMUM AND 0.391 INCHES MAXIMUM |
| INTERNAL PREBENT KEY WIDTH | 0.081 INCHES MINIMUM AND 0.091 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 0.560 INCHES MINIMUM AND 0.580 INCHES MAXIMUM |
| MATERIAL THICKNESS | 0.060 INCHES NOMINAL |
| MATERIAL | STEEL COMP 4130 OVERALL |
| WIRE HOLE DIAMETER | 0.062 INCHES MINIMUM AND 0.072 INCHES MAXIMUM |
| STYLE DESIGNATOR | INTERNAL PREBENT KEY |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |