| HEAD COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| HEAD DIAMETER | 0.906 INCHES NOMINAL |
| HEAD STYLE | FLAT COUNTERSUNK |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A576 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A549 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A576 ASSN STD 3RD MATERIAL RESPONSE OR ASTM A549 ASSN STD 3RD MATERIAL RESPONSE OR ASTM A549 ASSN STD 4TH MATERIAL RESPONSE OR ASTM A576 ASSN STD 4TH MATERIAL RESPONSE OR ASTM A549 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A108 ASSN STD 5TH MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1108 OR STEEL COMP 1110 OR STEEL COMP 1215 OVERALL |
| NOMINAL THREAD SIZE | 0.500 INCHES |
| NUT DIAMETER | 0.621 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
| NUT LENGTH | 1.297 INCHES MINIMUM AND 1.327 INCHES MAXIMUM |
| NUT STYLE | BLIND RIVET W/SMOOTH ROUND SHANK |
| SHANK END TYPE | OPEN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 13 |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |