| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| THREAD QUANTITY PER INCH | 13 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.250 INCHES MINIMUM |
| FASTENER LENGTH | 4.150 INCHES MINIMUM AND |
| 4.330 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A307 GR A ASSN STD SINGLE MATERIAL RESPONSE OR |
| SAE J429 GR 1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OR |
| ZINC AND |
| CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 3 FED SPEC 1ST TREATMENT RESPONSE OR |
| MIL-C-81562 TY 2 CL 3 MIL SPEC 1ST TREATMENT RESPONSE OR |
| ASTM B633 TY 2 CL FE/ZN5 ASSN STD 2ND TREATMENT RESPONSE OR |
| MIL-C-81562 TY 2 CL 3 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| MINIMUM TENSILE STRENGTH | 60000 POUNDS PER SQUARE INCH |
| HEAD STYLE | BUTTON |
| HEAD DIAMETER | 1.032 INCHES MINIMUM AND |
| 1.094 INCHES MAXIMUM |
| HEAD HEIGHT | 0.250 INCHES MINIMUM AND |
| 0.270 INCHES MAXIMUM |
| NECK LENGTH | 0.250 INCHES MINIMUM AND |
| 0.281 INCHES MAXIMUM |
| NECK WIDTH | 0.492 INCHES MINIMUM AND |
| 0.515 INCHES MAXIMUM |