| HEAD COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM | 
| HEAD HEIGHT | 0.124 INCHES MAXIMUM | 
| HEAD DIAMETER | 0.906 INCHES NOMINAL | 
| HEAD STYLE | FLAT COUNTERSUNK REVERSE KEYED | 
| KEY LENGTH | 0.124 INCHES MAXIMUM | 
| MATERIAL DOCUMENT AND CLASSIFICATION | AST-276 ASSN STD SINGLE MATERIAL RESPONSE  OR ASTM A580 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | 
| MATERIAL | STEEL COMP 430 OVERALL | 
| NOMINAL THREAD SIZE | 0.500 INCHES | 
| NUT DIAMETER | 0.621 INCHES MINIMUM AND 0.625 INCHES MAXIMUM | 
| NUT LENGTH | 1.079 INCHES MINIMUM AND 1.109 INCHES MAXIMUM | 
| NUT STYLE | BLIND RIVET W/SMOOTH ROUND SHANK | 
| 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 QUANTITY PER INCH | 13 | 
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |