| DRIVE END OUTSIDE DIAMETER | 3.875 INCHES MAXIMUM |
| DRIVE END SHAPE | SQUARE SINGLE END INTERNAL |
| DRIVE SURFACE SIZE | 1.000 INCHES NOMINAL SINGLE END |
| FEATURES PROVIDED | MANUAL TOOL |
| OVERALL LENGTH | 5.500 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND 2 CLASS AND A STYLE |
| SPECIAL MARKINGS | 3-7/8 IN. |
| WRENCHING SURFACE SIZE | 3.875 INCHES NOMINAL SINGLE END |
| WRENCHING END OPENING DEPTH | 2.500 INCHES MINIMUM |
| WRENCHING END OUTSIDE DIAMETER | 5.260 INCHES MAXIMUM |
| WRENCHING SURFACE SHAPE | 12 POINT SINGLE END INTERNAL |
| STYLE DESIGNATOR | INTERNAL-INTERNAL |
| SURFACE TREATMENT | OXIDE AND CHROMIUM AND NICKEL OVERALL |