| HEAD COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| HEAD DIAMETER | 0.323 INCHES NOMINAL |
| HEAD HEIGHT | 0.063 INCHES MAXIMUM |
| HEAD STYLE | FLAT COUNTERSUNK REVERSE KEYED |
| KEY LENGTH | 0.059 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A276 ASSN STD 1ST MATERIAL RESPONSE OR ASTMA580 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 430 OVERALL |
| NOMINAL THREAD SIZE | 0.138 INCHES |
| NUT DIAMETER | 0.185 INCHES MINIMUM AND 0.189 INCHES MAXIMUM |
| NUT STYLE | BLIND RIVET W/SMOOTH ROUND SHANK |
| NUT LENGTH | 0.610 INCHES MINIMUM AND 0.690 INCHES MAXIMUM |
| SHANK END TYPE | OPEN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 32 |