| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| THREAD QUANTITY PER INCH | 11 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 2.164 INCHES MINIMUM AND |
| 2.346 INCHES MAXIMUM |
| FASTENER LENGTH | 2.670 INCHES MINIMUM AND |
| 2.750 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 1013 OR |
| STEEL COMP 1015 OR |
| STEEL COMP 1016 OR |
| STEEL COMP 1017 OR |
| STEEL COMP 1018 OR |
| STEEL COMP 1019 OR |
| STEEL COMP 1020 OR |
| STEEL COMP 1021 OR |
| STEEL COMP 1022 OR |
| STEEL COMP 1023 OR |
| STEEL COMP 1025 OR |
| STEEL COMP 1026 OR |
| STEEL COMP 1029 OR |
| STEEL COMP 1030 OR |
| STEEL COMP 1031 OR |
| STEEL COMP 1033 OR |
| STEEL COMP 1034 OR |
| STEEL COMP 1035 OR |
| STEEL COMP 1037 OR |
| STEEL COMP 1038 OR |
| STEEL COMP 1039 OR |
| STEEL COMP 1040 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND |
| 45.0 ROCKWELL C MAXIMUM OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| MINIMUM YIELD STRENGTH | 150000 POUNDS PER SQUARE INCH |
| HEAD STYLE | FLAT COUNTERSUNK |
| HEAD DIAMETER | 1.112 INCHES MINIMUM AND |
| 1.188 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND |
| 84.0 DEGREES MAXIMUM |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.375 INCHES NOMINAL |
| NONDEFINITIVE SPEC/STD DATA | 4 TYPE |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81348 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | FF-S-86 |