| MATERIAL | STEEL OVERALL |
| SURFACE TREATMENT | NICKEL AND |
| CHROMIUM OVERALL |
| STYLE DESIGNATOR | INTERNAL-INTERNAL |
| OVERALL LENGTH | 1.270 INCHES MAXIMUM |
| WRENCHING END OUTSIDE DIAMETER | 0.550 INCHES MAXIMUM |
| DRIVE END OUTSIDE DIAMETER | 0.550 INCHES MAXIMUM |
| WRENCHING END OPENING DEPTH | 0.265 INCHES MINIMUM |
| WRENCHING SURFACE SIZE | 0.375 INCHES NOMINAL SINGLE END |
| WRENCHING SURFACE SHAPE | 12 POINT SINGLE END INTERNAL |
| DRIVE SURFACE SIZE | 0.250 INCHES NOMINAL SINGLE END |
| DRIVE END SHAPE | SQUARE SINGLE END INTERNAL |
| FEATURES PROVIDED | MANUAL TOOL |
| SPECIAL FEATURES | BOLT CLEARANCE DIA MIN 0.328 IN. |
| SPECIFICATION/STANDARD DATA | 81343-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND |
| 1 CLASS AND |
| A STYLE |