| HARDNESS RATING | 44.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM |
| HOLE DIAMETER | 4.1 MILLIMETERS MINIMUM AND 4.4 MILLIMETERS MAXIMUM |
| MATERIAL THICKNESS | 1.4 MILLIMETERS MINIMUM AND 1.6 MILLIMETERS MAXIMUM |
| MATERIAL | STEEL OVERALL |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | HELICAL SPRING LOCK WASHER |
| PROPRIETARY CHARACTERISTICS | PACS |
| OUTSIDE DIAMETER | 5.5 MILLIMETERS MINIMUM AND 6.0 MILLIMETERS MAXIMUM |
| STYLE DESIGNATOR | SPLIT HELICAL-RIGHT HAND |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | CEMS G-20, CLASS 6A MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |