| EXTENDED WASHER DIAMETER | 0.639 INCHES MINIMUM AND 0.649 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.081 INCHES MINIMUM AND 0.101 INCHES MAXIMUM |
| FASTENER LENGTH | 1.661 INCHES MINIMUM AND 1.691 INCHES MAXIMUM |
| HEAD HEIGHT | 0.378 INCHES MINIMUM AND 0.398 INCHES MAXIMUM |
| HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| HOLE CONFIGURATION STYLE | DOUBLE HEXAGON LONGITUDINAL HOLE |
| HOLE DIAMETER | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM |
| HOLE QUANTITY | 4 |
| HOLE TYPE | DRILLED |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP XM-13 OVERALL |
| MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| SHOULDER DIAMETER | 0.4052 INCHES MINIMUM AND 0.4057 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER LENGTH | 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM FIRST SHOULDER |
| WIDTH BETWEEN FLATS | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.589 INCHES MINIMUM AND 0.639 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |