| COLOR | BLACK OVERALL |
| FASTENER LENGTH | 2.500 INCHES NOMINAL |
| HEAD DIAMETER | 1.293 INCHES MINIMUM AND 1.312 INCHES MAXIMUM |
| HEAD HEIGHT | 0.864 INCHES MINIMUM AND 0.875 INCHES MAXIMUM |
| HEAD STYLE | FILLISTER |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6415 NATIONAL SPEC 1ST MATERIAL RESPONSE OR AMS 6484 NATIONAL SPEC 1ST MATERIAL RESPONSE AND MIL-S-6049 FED SPEC 2ND MATERIAL RESPONSE OR AMS 6322 NATIONAL SPEC 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4340 OR STEEL COMP 8740 OVERALL |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,CAP,SOCKET HE |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD DIAMETER | 0.875 INCHES |
| WIDTH ACROSS FLATS | 0.750 INCHES MINIMUM AND 0.757 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924, CL 1 FED SPEC SINGLE TREATMENT RESPONSE OR MIL-C-13924, CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE FILM OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 2.250 INCHES MINIMUM |
| THREAD QUANTITY PER INCH | 14 |
| THREAD SERIES DESIGNATOR | UNJF |