| MATERIAL | STEEL OVERALL |
| SURFACE TREATMENT | CHROMIUM OVERALL |
| STYLE DESIGNATOR | INTERNAL-INTERNAL |
| OVERALL LENGTH | 1.281 INCHES NOMINAL |
| WRENCHING END OUTSIDE DIAMETER | 1.094 INCHES NOMINAL |
| DRIVE END OUTSIDE DIAMETER | 1.094 INCHES NOMINAL |
| WRENCHING END OPENING DEPTH | 0.563 INCHES NOMINAL |
| WRENCHING SURFACE SIZE | 21.0 MILLIMETERS NOMINAL SINGLE END |
| WRENCHING SURFACE SHAPE | 12 POINT SINGLE END INTERNAL |
| DRIVE SURFACE SIZE | 0.375 INCHES NOMINAL SINGLE END |
| DRIVE END SHAPE | SQUARE SINGLE END INTERNAL |
| FEATURES PROVIDED | MANUAL TOOL |