| HEAD HEIGHT | 0.032 INCHES NOMINAL |
| HEAD DIAMETER | 0.310 INCHES MINIMUM AND 0.340 INCHES MAXIMUM |
| HEAD STYLE | FLAT KEYED |
| KEY LENGTH | 0.023 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 1108 OR STEEL COMP 1110 OVERALL |
| NOMINAL THREAD SIZE | 0.138 INCHES |
| NUT DIAMETER | 0.185 INCHES MINIMUM AND 0.189 INCHES MAXIMUM |
| NUT LENGTH | 0.485 INCHES MINIMUM AND 0.515 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 | 32 |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |