| 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 | 1.438 INCHES MINIMUM AND |
| 1.562 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE GR 1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OR |
| ZINC OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR |
| QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 95.0 ROCKWELL B MAXIMUM OVERALL |
| MINIMUM TENSILE STRENGTH | 55000 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 |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE OR |
| A STYLE OR |
| 1 CLASS |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81348 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | FFB584 |