| FASTENER LENGTH | 0.531 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| HEAD HEIGHT | 0.140 INCHES MINIMUM AND 0.156 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-634 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-633 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-631 FED SPEC 3RD MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 1020 OR STEEL COMP 1022 OR STEEL COMP 1025 OR STEEL COMP 1026 OR STEEL COMP 1021 OR STEEL COMP 1527 OR STEEL COMP 1023 OR STEEL COMP 1030 OVERALL |
| NOMINAL THREAD DIAMETER | 0.216 INCHES |
| PRIMARY WASHER STYLE | SPLIT HELICAL RING |
| WASHER QUANTITY | 1 |
| WIDTH BETWEEN FLATS | 0.328 INCHES MINIMUM AND 0.344 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.437 INCHES MINIMUM AND 0.453 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 28 |