| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | FF-B-584 |
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.750 INCHES MINIMUM |
| FASTENER LENGTH | 2.460 INCHES MINIMUM AND |
| 2.520 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| SURFACE TREATMENT | CADMIUM AND |
| ZINC AND |
| CHROMATE OR |
| CADMIUM OR |
| ZINC OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE2,CLASS3 FED SPEC 1ST TREATMENT RESPONSE AND |
| QQ-P-416,TYPE2,CLASS3 FED SPEC 2ND TREATMENT RESPONSE OR |
| QQ-Z-325,TYPE2,CLASS3 FED SPEC 3RD TREATMENT RESPONSE AND |
| QQ-Z-325,TYPE2,CLASS3 FED SPEC 4TH TREATMENT RESPONSE OR |
| MIL-C-81562 TYPE2,CLASS3 MIL SPEC 5TH TREATMENT RESPONSE OR |
| MIL-C-81562 TYPE2,CLASS3 MIL SPEC ALL TREATMENT RESPONSES OVERALL |
| HARDNESS RATING | 95.0 ROCKWELL B MAXIMUM OVERALL |
| MINIMUM TENSILE STRENGTH | 60000 POUNDS PER SQUARE INCH |
| HEAD STYLE | BUTTON |
| HEAD DIAMETER | 0.563 INCHES MINIMUM AND |
| 0.594 INCHES MAXIMUM |
| HEAD HEIGHT | 0.125 INCHES MINIMUM AND |
| 0.145 INCHES MAXIMUM |
| NECK LENGTH | 0.125 INCHES MINIMUM AND |
| 0.156 INCHES MAXIMUM |
| NECK WIDTH | 0.245 INCHES MINIMUM AND |
| 0.260 INCHES MAXIMUM |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND |
| 1 CLASS AND |
| A STYLE |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81348 |