| FASTENER LENGTH | 1.000 INCHES NOMINAL |
| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| LOCKING FEATURE | MATERIAL IN THREADS LOCKING FEATURE |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A354,GRADE BD AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE FASTENER |
| MATERIAL | STEEL FASTENER |
| MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | HEX CAP SCREW |
| NOMINAL THREAD DIAMETER | 0.3125 INCHES |
| SPECIAL FEATURES | LOCKING ELEMENT IAW MIL-F-8961 OR MIL-DTL-18240 |
| SPECIFICATION/STANDARD DATA | 81349-MIL-DTL-1222J GOVERNMENT SPECIFICATION |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.875 INCHES MINIMUM |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH BETWEEN FLATS | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |