| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.793 INCHES MINIMUM AND 0.823 INCHES MAXIMUM |
| HEAD DIAMETER | 0.355 INCHES MINIMUM AND 0.397 INCHES MAXIMUM |
| HEAD HEIGHT | 0.063 INCHES MAXIMUM |
| HEAD STYLE | FLAT COUNTERSUNK UNDERCUT |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SHANK UNTHREADED HOLE DIAMETER | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM ALL HOLES |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD FORMING METHOD | CUT |
| THREAD LENGTH | 0.370 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |