| EXTERNAL PREBENT KEY ANGLE | 30.0 DEGREES NOMINAL |
| EXTERNAL PREBENT KEY LENGTH | 0.119 INCHES NOMINAL |
| EXTERNAL PREBENT KEY WIDTH | 0.062 INCHES MINIMUM AND 0.066 INCHES MAXIMUM |
| HARDNESS RATING | 43.0 ROCKWELL C MINIMUM |
| HOLE DIAMETER | 0.625 INCHES MINIMUM AND 0.635 INCHES MAXIMUM |
| III MATERIAL | STEEL COMP 630 OVERALL |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER, LOCK, MS21340 AND MS3186 NUTS, INTERNAL KEY |
| PROPRIETARY CHARACTERISTICS | PACS |
| OUTSIDE DIAMETER | 0.988 INCHES MINIMUM AND 0.998 INCHES MAXIMUM |
| STYLE DESIGNATOR | KEY |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM A967 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |