| FASTENER LENGTH | 0.947 INCHES MINIMUM AND 0.972 INCHES MAXIMUM |
| GRIP LENGTH | 0.615 INCHES MINIMUM AND 0.630 INCHES MAXIMUM |
| HEAD HEIGHT | 0.058 INCHES MINIMUM AND 0.070 INCHES MAXIMUM |
| HEAD MAJOR DIAMETER | 0.379 INCHES MINIMUM AND 0.389 INCHES MAXIMUM |
| LUBRICATION | CETYL ALCOHOL |
| MATERIAL | STEEL COMP 8740 OR STEEL COMP 4340 OVERALL |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| SHANK DIAMETER | 0.2636 INCHES NOMINAL |
| SHANK STYLE | PIN-RIVET, TAPERED, THREADED |
| SHEAR STRENGTH | 108000 SINGLE POUNDS PER SQUARE INCH |
| SPECIFICATION/STANDARD DATA | 80205-NAS1728 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNJF |
| TIP DIAMETER | 0.2625 INCHES NOMINAL |