| FASTENER LENGTH | 0.412 INCHES NOMINAL |
| HEAD HEIGHT | 0.173 INCHES MINIMUM AND 0.203 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| HOLE NOMINAL THREAD DIAMETER | 0.219 INCHES |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.112 INCHES |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| PRIMARY WASHER MATERIAL THICKNESS | 0.032 INCHES NOMINAL |
| PRIMARY WASHER STYLE | FLAT |
| SECONDARY WASHER RELATIONSHIP TO PRIMARY WASHER | IDENTICAL |
| SPECIAL FEATURES | THREADED INTERNAL DRIVE |
| WASHER QUANTITY | 2 |
| WIDTH BETWEEN FLATS | 0.173 INCHES MINIMUM AND 0.203 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY2 CL2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 TY2 CL3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OR CHROMATE AND ZINC OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 2A |
| THREAD LENGTH | 0.412 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNC |
| THREAD QUANTITY PER INCH | 40 |