| FULL INTERNAL THREAD LENGTH | 0.2500 INCHES NOMINAL |
| INSERT SIZE | 0.437 IN OD |
| INTERNAL THREAD RELIEF DEPTH | 0.2500 INCHES NOMINAL |
| LENGTH | 0.3750 INCHES MINIMUM AND 0.4150 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 303 OR STEEL COMP 4140 OVERALL |
| NOMINAL THREAD SIZE | 0.4370 INCHES |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNF |
| STYLE DESIGNATOR | KEYLOCK |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OR QQ-P-416, TY 2, CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OR CADMIUM OR CHROMATE OVERALL |
| THREAD CLASS | 2A |