| CENTER HOLE SHAPE STYLE | ROUND |
| CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| HOLE DIAMETER | 0.516 INCHES MINIMUM AND 0.536 INCHES MAXIMUM |
| OVERALL DIAMETER | 0.995 INCHES MINIMUM AND 1.020 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6350 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4130 OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER,FLAT |
| PERIPHERAL SHAPE STYLE | ROUND |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS B633 TYPE V OR VI,SC3. POST COATING HEAT TREATMENT IAW ASTM B850,TABLE 1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| THICKNESS | 0.105 INCHES MINIMUM AND 0.113 INCHES MAXIMUM |