| MATERIAL | STEEL OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| CROSS-SECTIONAL SHAPE | HEXAGON |
| WIDTH ACROSS FLATS | 0.250 INCHES NOMINAL |
| STYLE DESIGNATOR | LEFT INTERNAL AND RIGHT INTERNAL THREADS |
| LENGTH | 3.500 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNC LEFT INTERNAL (INCLUDES THRU THREAD) |
| UNC RIGHT INTERNAL |
| NOMINAL THREAD SIZE | 0.138 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) |
| 0.138 INCHES RIGHT INTERNAL |
| THREAD QUANTITY PER INCH | 32 LEFT INTERNAL (INCLUDES THRU THREAD) |
| THREAD CLASS | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| 2B RIGHT INTERNAL |
| THREAD DIRECTION | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| RIGHT-HAND RIGHT INTERNAL |
| THREAD LENGTH | 3.500 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) |
| 3.500 INCHES NOMINAL RIGHT INTERNAL |
| SPECIAL FEATURES | COUNTERSINK BOTH ENDS |
| SPECIFICATION/STANDARD DATA | 80205-NAS1831 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |