| FASTENER LENGTH | 0.375 INCHES NOMINAL |
| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | GRADE 8/GRADE BD PER ASTM A354 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | HEX HEAD CAP SCREW |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SPECIFICATION/STANDARD DATA | 81349-MIL-DTL-1222J GOVERNMENT SPECIFICATION |
| THREAD LENGTH | 0.375 INCHES NOMINAL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |