| CASEHARDENING INDICATOR | NOT CASEHARDENED |
| CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| GAP OPENING | OPENING 90 DEGREES OR MORE |
| END STYLE | 90 DEGREE PARALLEL |
| INSIDE DIAMETER | 1.199 INCHES MINIMUM AND 1.224 INCHES MAXIMUM |
| MAJOR THICKNESS | 0.048 INCHES MINIMUM AND 0.052 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 1.580 INCHES MINIMUM AND 1.660 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A568/A568M AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ALL MATERIAL RESPONSES OR ASTM A684/A684M AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ALL MATERIAL RESPONSES |
| MATERIAL HARDNESS RATING | 48.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM |
| MATERIAL | STEEL COMP 1060 OR STEEL COMP 1095 |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | RING, RETAINING, EXTERNAL, INVERTED (TAPERED SECTION TYPE) |
| RING STYLE | EXTERNAL INVERTED LUGS |
| SPECIAL FEATURES | MATERIAL: CARBON SPRING STEEL,GRADE 1060 THRU 1095 (UNS G10600 THRU G10950) IN ACCORDANCE WITH ASTM A568/A568M OR ASTM A684/A684M. FINISH: ZINC COAT IN ACCORDANCE WITH ASTM B633, TYPE II, CLASS FE/ZN 5 OR ASTM B695, TYPE II, CLASS 5. HARDNESS: 48-53 HRC. PROCUREMENT SPEC: MIL-R-21248, TYPE 1, CLASS 4. |
| USAGE DESIGN | EXTERNAL |
| SPECIFICATION/STANDARD DATA | 81349-MIL-R-21248 GOVERNMENT SPECIFICATION |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTMB633,TYP II, CL FE/ZN5 INTERNATIONAL STD/SPEC ALL TREATMENT RESPONSES OR ASTMB695,TYP II, CL 5 INTERNATIONAL STD/SPEC ALL TREATMENT RESPONSES |
| SURFACE TREATMENT | ZINC |