| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 1.125 INCHES |
| THREAD QUANTITY PER INCH | 12 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.478 INCHES MINIMUM AND |
| 1.518 INCHES MAXIMUM |
| FASTENER LENGTH | 6.550 INCHES MINIMUM AND |
| 6.570 INCHES MAXIMUM |
| MATERIAL | STEEL COMP E4340 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 COND F MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND |
| 43.0 ROCKWELL C MAXIMUM OVERALL |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER |
| HEAD HEIGHT | 1.145 INCHES MINIMUM AND |
| 1.165 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 1.308 INCHES MINIMUM AND |
| 1.318 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 2.115 INCHES MINIMUM AND |
| 2.125 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.259 INCHES MINIMUM AND |
| 0.279 INCHES MAXIMUM |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER DIAMETER | 1.2475 INCHES MINIMUM AND |
| 1.2490 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 4.752 INCHES MINIMUM AND |
| 4.772 INCHES MAXIMUM FIRST SHOULDER |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 77272 |
| DESIGN CONTROL REFERENCE | 114D2162-3 |