| EXTERNAL KEY QUANTITY | 4 |
| EXTERNAL STRAIGHT KEY WIDTH | 0.150 INCHES MINIMUM AND 0.170 INCHES MAXIMUM |
| HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| HOLE DIAMETER | 4.000 INCHES MINIMUM AND 4.020 INCHES MAXIMUM |
| INTERNAL KEY QUANTITY | 2 |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS6359 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6415 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| OUTSIDE DIAMETER | 4.637 INCHES MINIMUM AND 4.657 INCHES MAXIMUM |
| STYLE DESIGNATOR | KEY |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-P-16232,TYPE Z,CLASS 4A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE OVERALL |