| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
| FASTENER LENGTH | 1.315 INCHES MINIMUM AND 1.335 INCHES MAXIMUM |
| GRIP LENGTH | 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM |
| HEAD HEIGHT | 0.0523 INCHES MINIMUM AND 0.0544 INCHES MAXIMUM |
| HEAD STYLE | FLUSH COUNTERSUNK |
| HEAD MAJOR DIAMETER | 0.3898 INCHES MINIMUM AND 0.3948 INCHES MAXIMUM |
| LUBRICATION | CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| MATERIAL | STEEL COMP XM-13 OVERALL |
| MINIMUM TENSILE STRENGTH | 2600 POUNDS PER SQUARE INCH |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | PIN RIVET |
| NOMINAL THREAD SIZE | 0.2500 INCHES |
| SHANK DIAMETER | 0.2646 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM |
| SHEAR STRENGTH | 8100 DOUBLE POUNDS PER SQUARE INCH |
| SHANK STYLE | PIN-RIVET, STRAIGHT, THREADED |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |