| COUNTERSINK ANGLE | 130.0 DEGREES NOMINAL |
| FASTENER LENGTH | 1.073 INCHES MINIMUM AND 1.093 INCHES MAXIMUM |
| GRIP LENGTH | 0.683 INCHES MINIMUM AND 0.693 INCHES MAXIMUM |
| HEAD MAJOR DIAMETER | 0.5026 INCHES MINIMUM AND 0.5111 INCHES MAXIMUM |
| HEAD STYLE | FLUSH COUNTERSUNK |
| IDENTIFICATION CODE COLOR | ORANGE |
| LUBRICATION | CETYL ALCOHOL AND SOLID FILM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | NICKEL ALLOY 718 OVERALL |
| MINIMUM TENSILE STRENGTH | 4400 POUNDS PER SQUARE INCH |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| SHEAR STRENGTH | 12260 DOUBLE POUNDS PER SQUARE INCH |
| SHANK STYLE | PIN-RIVET, STRAIGHT, THREADED |
| SHANK DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| SPECIAL FEATURES | POWDER BLAST TOP OF HEAD, WITH COLOR ORANGE ON THREAD END. |
| WIDTH BETWEEN FLATS | 0.0947 INCHES MINIMUM AND 0.0967 INCHES MAXIMUM |
| SPECIFICATION/STANDARD DATA | 1W025-03A078 MANUFACTURERS STANDARD |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |