| DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY | 1.439 INCHES MINIMUM AND 1.449 INCHES MAXIMUM |
| HARDNESS RATING | 33.0 ROCKWELL C MAXIMUM |
| HOLE DIAMETER | 3.130 INCHES MINIMUM AND 3.140 INCHES MAXIMUM |
| INTERNAL KEY QUANTITY | 2 |
| INTERNAL STRAIGHT KEY WIDTH | 0.270 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-8844,CL 1,COND E2 MIL SPEC SINGLE MATERIAL RESPONSE OR AMS 6414 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL THICKNESS | 0.281 INCHES NOMINAL |
| MATERIAL | STEEL COMP 4340 OVERALL |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| OUTSIDE DIAMETER | 3.546 INCHES MINIMUM AND 3.547 INCHES MAXIMUM |
| STYLE DESIGNATOR | KEY |
| SURFACE FINISH | 32.0 MICROINCHES OUTER |