| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.671 INCHES MINIMUM AND |
| 0.687 INCHES MAXIMUM |
| FASTENER LENGTH | 5.125 INCHES NOMINAL |
| MATERIAL | STEEL COMP 1010 OR |
| STEEL COMP 1018 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A545 ASSN STD ALL MATERIAL RESPONSES OR |
| ASTM A549 ASSN STD ALL MATERIAL RESPONSES OR |
| ASTM A548 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | HEXAGON |
| HEAD HEIGHT | 0.296 INCHES MINIMUM AND |
| 0.328 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.875 INCHES NOMINAL |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER DIAMETER | 0.559 INCHES MINIMUM AND |
| 0.561 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 4.438 INCHES MINIMUM AND |
| 4.454 INCHES MAXIMUM FIRST SHOULDER |
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 4.908 INCHES MINIMUM AND |
| 4.939 INCHES MAXIMUM FIRST HOLE |
| SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES MINIMUM AND |
| 0.116 INCHES MAXIMUM FIRST HOLE |
| CRITICALITY CODE JUSTIFICATION | AATN |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 19204 |
| DESIGN CONTROL REFERENCE | 10900962 |