| FASTENER LENGTH | 1.625 INCHES NOMINAL |
| HEAD HEIGHT | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| HOLE DIAMETER | 0.046 INCHES NOMINAL |
| HOLE QUANTITY | 3 |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE III |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6382 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6415 ASSN STD 2ND MATERIAL RESPONSE OR AMS 6322 ASSN STD 3RD MATERIAL RESPONSE |
| SCREW MATERIAL | STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740 |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-416, TYPE II, CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE |
| SCREW SURFACE TREATMENT | CADMIUM |
| SPECIFICATION/STANDARD DATA | 80205-NAS1801 NATIONAL STD/SPEC |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.625 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM |