| FASTENER LENGTH | 0.359 INCHES MINIMUM AND 0.406 INCHES MAXIMUM |
| FEATURES PROVIDED | FINISHED HEAD |
| HEAD HOLE CONFIGURATION STYLE | HEXAGON CORNERS |
| HEAD HEIGHT | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| HOLE DIAMETER | 0.046 INCHES MINIMUM AND 0.056 INCHES MAXIMUM |
| HOLE QUANTITY | 3 |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW, HEX HEAD, CRUCIFORM RECESS FULL THREAD |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SCREW MATERIAL | STEEL COMP E4340 OR STEEL COMP 8740 OR STEEL COMP 4340 |
| SCREW SURFACE TREATMENT | CADMIUM AND CHROMATE |
| THREAD LENGTH | 0.295 INCHES MINIMUM AND 0.374 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM |