| FASTENER LENGTH | 0.375 INCHES NOMINAL |
| HEAD DIAMETER | 0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
| HEAD HEIGHT | 0.091 INCHES MINIMUM AND 0.106 INCHES MAXIMUM |
| HEAD STYLE | FILLISTER |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-630 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-631 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-634 FED SPEC 1ST MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 1010 OR STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| PRIMARY WASHER MATERIAL THICKNESS | 0.036 INCHES NOMINAL |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.327 INCHES MINIMUM AND 0.338 INCHES MAXIMUM |
| PRIMARY WASHER STYLE | FLAT INTERNAL TEETH |
| WASHER QUANTITY | 1 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.339 INCHES MINIMUM |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNC |