| HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM |
| HOLE DIAMETER | 0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM |
| INTERNAL PREBENT KEY WIDTH | 0.015 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5659 NATIONAL SPEC SINGLE MATERIAL RESPONSE OR AMS 5643 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL THICKNESS | 0.063 INCHES NOMINAL |
| III MATERIAL | STEEL CORROSION RESISTING OVERALL |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER,KEY |
| PROPRIETARY CHARACTERISTICS | PACS |
| OUTSIDE DIAMETER | 0.55 INCHES MINIMUM AND 0.57 INCHES MAXIMUM |
| REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | ITEM IS FAA CERTIFIED |
| WIRE HOLE DIAMETER | 0.062 INCHES NOMINAL |
| STYLE DESIGNATOR | INTERNAL PREBENT KEY |
| SURFACE FINISH | 125.0 MICROINCHES ALL SURFACES |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2417 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC AND NICKEL OVERALL |