| DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY | 4.280 INCHES MINIMUM AND 4.300 INCHES MAXIMUM |
| EXTERNAL KEY QUANTITY | 4 |
| EXTERNAL STRAIGHT KEY WIDTH | 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM |
| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM |
| HOLE DIAMETER | 8.893 INCHES MINIMUM AND 8.973 INCHES MAXIMUM |
| INTERNAL KEY QUANTITY | 2 |
| INTERNAL STRAIGHT KEY WIDTH | 0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 9.660 INCHES MINIMUM AND 9.680 INCHES MAXIMUM |
| OVERALL DISTANCE INCLUDING KEYS | 10.000 INCHES MINIMUM AND 10.020 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-18729 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6415 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL THICKNESS | 0.096 INCHES MINIMUM AND 0.104 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 4130 OR STEEL COMP 4340 OVERALL |
| SPECIAL FEATURES | INTERNAL KEYS 180.0 DEGREES APART OFFSET 8 DEG 15 MIN 55 SEC FROM CENTER LINE OF EXTERNAL KEYS |
| STYLE DESIGNATOR | KEY |
| SURFACE FINISH | 63.0 MICROINCHES BOTTOM |
| SURFACE FINISH | 63.0 MICROINCHES TOP |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DOD-P-16232,TY Z,CL 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE OVERALL |