| HARDNESS RATING | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM |
| HOLE DIAMETER | 1.144 INCHES MINIMUM AND 1.172 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 1.853 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL THICKNESS | 0.301 INCHES NOMINAL |
| MATERIAL | STEEL COMP 1060 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OVERALL |
| NONDEFINITIVE SPEC/STD DATA | A CLASS AND 2 STYLE |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER, LOCK-HELICAL SPRING, REGULAR (MEDIUM) SERIES |
| STYLE DESIGNATOR | SPLIT HELICAL-RIGHT HAND |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC AND CHROMATE OVERALL |