| FASTENER LENGTH | 1.9215 INCHES MINIMUM AND 1.9685 INCHES MAXIMUM |
| HEAD HEIGHT | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE III |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW, HEX HEAD WITH CROSS RECESS, A286 CRES, 160 KSI |
| PROPRIETARY CHARACTERISTICS | PACS |
| MINIMUM TENSILE STRENGTH | 5820 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.2500 INCHES |
| REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | ITEM IS FAA CERTIFIED |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5737 FED STD SINGLE MATERIAL RESPONSE |
| SCREW MATERIAL | IRON ALLOY 660 |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE |
| SCREW SURFACE TREATMENT | CADMIUM |
| SPECIAL FEATURES | O'LEVEL ATA-54 |
| WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.9215 INCHES MINIMUM AND 1.9685 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNJF |