| COLOR | BLACK OVERALL |
| DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY | 1.615 INCHES MINIMUM AND 1.620 INCHES MAXIMUM |
| EXTERNAL STRAIGHT KEY WIDTH | 0.150 INCHES MINIMUM AND 0.170 INCHES MAXIMUM |
| EXTERNAL KEY QUANTITY | 4 |
| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM |
| HOLE DIAMETER | 3.540 INCHES MINIMUM AND 3.550 INCHES MAXIMUM |
| INTERNAL KEY QUANTITY | 2 |
| INTERNAL STRAIGHT KEY WIDTH | 0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| MATERIAL THICKNESS | 0.046 INCHES MINIMUM AND 0.054 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 4130 OVERALL |
| OUTSIDE DIAMETER | 3.985 INCHES MINIMUM AND 3.995 INCHES MAXIMUM |
| OVERALL DISTANCE INCLUDING KEYS | 4.345 INCHES MINIMUM AND 4.355 INCHES MAXIMUM |
| STYLE DESIGNATOR | KEY |
| SURFACE FINISH | 63.0 MICROINCHES BOTTOM |
| SURFACE FINISH | 63.0 MICROINCHES INNER |
| SURFACE FINISH | 63.0 MICROINCHES TOP |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE FILM OVERALL |