| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.330 INCHES MINIMUM AND |
| 0.370 INCHES MAXIMUM |
| FASTENER LENGTH | 3.460 INCHES MINIMUM AND |
| 3.500 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626,COND C4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | LCP 1067,FSCM 16659 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| STYLE DESIGNATOR | CONCENTRIC HOLE UNTHREADED |
| SHOULDER DIAMETER | 0.6237 INCHES MINIMUM AND |
| 0.6242 INCHES MAXIMUM |
| SHOULDER LENGTH | 3.130 INCHES NOMINAL |
| CONCENTRIC HOLE DEPTH | 2.680 INCHES NOMINAL |
| CONCENTRIC HOLE DIAMETER | 0.623 INCHES MINIMUM AND |
| 0.624 INCHES MAXIMUM |
| HEAD STYLE | ROUND W/WRENCH FLATS |
| HEAD DIAMETER | 1.125 INCHES NOMINAL |
| HEAD HEIGHT | 0.125 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.875 INCHES NOMINAL |
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.360 INCHES NOMINAL FIRST HOLE |
| SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES NOMINAL FIRST HOLE |
| CRITICALITY CODE JUSTIFICATION | AAVH |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 98897 |
| DESIGN CONTROL REFERENCE | 1292696-109 |