| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.451 INCHES MINIMUM AND |
| 0.481 INCHES MAXIMUM |
| FASTENER LENGTH | 4.028 INCHES NOMINAL |
| MATERIAL | STEEL COMP 430 OVERALL |
| STEEL COMP 304 PRIMARY WASHER |
| STEEL COMP 430 FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE PRIMARY WASHER |
| ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OR |
| QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE FASTENER |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | FILLISTER COUNTERSUNK |
| HEAD DIAMETER | 0.235 INCHES MINIMUM AND |
| 0.245 INCHES MAXIMUM |
| HEAD HEIGHT | 0.132 INCHES MINIMUM AND |
| 0.156 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 40.0 DEGREES MINIMUM AND |
| 50.0 DEGREES MAXIMUM |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE II |
| WASHER QUANTITY | 1 |
| PRIMARY WASHER STYLE | FLAT |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.262 INCHES MINIMUM AND |
| 0.272 INCHES MAXIMUM |
| PRIMARY WASHER MATERIAL THICKNESS | 0.079 INCHES MINIMUM AND |
| 0.109 INCHES MAXIMUM |