| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNJF |
| DOCUMENT TYPE | CIVIL STANDARD |
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.7385 INCHES MINIMUM AND 0.7685 INCHES MAXIMUM |
| HEAD HEIGHT | 0.018 INCHES MAXIMUM |
| HEAD DIAMETER | 0.445 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| HEAD STYLE | FILLISTER COUNTERSUNK |
| INTERNAL DRIVE STYLE | HIGH-TORQUE |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD DIAMETER | 0.2500 INCHES |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6322 ASSN STD 2ND MATERIAL RESPONSE OR AMS 6304 ASSN STD 2ND MATERIAL RESPONSE |
| SCREW MATERIAL | STEEL COMP 4340 OR STEEL COMP 8740 |
| SCREW SURFACE TREATMENT | NICKEL AND CADMIUM |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2416 ASSN STD SINGLE TREATMENT RESPONSE |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.316 INCHES NOMINAL |