| HEAD HEIGHT | 0.038 INCHES NOMINAL |
| HEAD DIAMETER | 0.391 INCHES MINIMUM AND 0.421 INCHES MAXIMUM |
| HEAD STYLE | FLAT KEYED |
| KEY LENGTH | 0.023 INCHES NOMINAL |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD SIZE | 0.190 INCHES |
| NUT DIAMETER | 0.246 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| NUT GRIP RANGE | +0.130 TO 0.180 INCHES |
| NUT STYLE | BLIND RIVET W/SMOOTH ROUND SHANK |
| NUT LENGTH | 0.626 INCHES MINIMUM AND 0.656 INCHES MAXIMUM |
| SHANK END TYPE | OPEN |
| SPECIFICATION/STANDARD DATA | 80205-NAS1329 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY2,CLASS 2 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 | UNF |