| FASTENER LENGTH | 3.719 INCHES MINIMUM AND 3.813 INCHES MAXIMUM |
| HEAD DIAMETER | 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
| HEAD HEIGHT | 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM |
| HEAD STYLE | PAN |
| INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) |
| MATERIAL DOCUMENT AND CLASSIFICATION | A-55731 ASSN STD SINGLE MATERIAL RESPONSE OR MS5732 ASSN STD SINGLE MATERIAL RESPONSE OR MS5737 ASSN STD SINGLE MATERIAL RESPONSE OR MS5853 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SREW SELF-LOCKING PAN HEAD, FULL THREAD OFFSET CRUCIFORM RECESS. |
| MATERIAL | IRON ALLOY 660 OVERALL |
| MINIMUM TENSILE STRENGTH | 1200 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.138 INCHES |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MA-QQ-P-35 ASSN STD SINGLE TREATMENT RESPONSE OR Q-P-416 TYPEII FED SPEC 13TH TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OR CADMIUM OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.75 INCHES MINIMUM |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNJC |