| EXTENDED WASHER DIAMETER | 0.730 INCHES MINIMUM AND 0.740 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM |
| FASTENER LENGTH | 0.620 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
| FEATURES PROVIDED | UNFINISHED HEAD |
| HEAD HEIGHT | 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM |
| HEAD DIAMETER | 0.685 INCHES MINIMUM AND 0.687 INCHES MAXIMUM |
| HEAD STYLE | FILLISTER EXTENDED WASHER |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-T-580 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| NONSTANDARD THREAD PITCH DIAMETER | +0.2217 TO 0.2229 INCHES |
| SPECIAL FEATURES | THD END 0.125 IN. RADIUS |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-P-16232,TYPE M,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE MANGANESE OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.573 INCHES MINIMUM AND 0.578 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNS |