| HEAD DIAMETER | 0.460 INCHES MINIMUM AND 0.490 INCHES MAXIMUM |
| HEAD HEIGHT | 0.058 INCHES NOMINAL |
| HEAD STYLE | FLAT |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A276 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 316 OVERALL |
| NOMINAL THREAD SIZE | 0.2500 INCHES |
| NUT DIAMETER | 0.328 INCHES MINIMUM AND 0.332 INCHES MAXIMUM |
| NUT STYLE | BLIND RIVET W/SMOOTH ROUND SHANK |
| NUT LENGTH | 0.797 INCHES MINIMUM AND 0.827 INCHES MAXIMUM |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT,BLIND RIVET,FLAT HEAD,INTERNAL THREAD,NON-LOCKING (FREE-RUNNING) AND SELF-LOCKING (PREVAILING TORQUE) |
| SHANK END TYPE | OPEN |
| SPECIFICATION/STANDARD DATA | 80205-NAS1329 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-416 TYPE II,CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |