| FASTENER LENGTH | 3.953 INCHES MINIMUM AND 4.000 INCHES MAXIMUM |
| GRIP LENGTH | 3.297 INCHES MINIMUM AND 3.328 INCHES MAXIMUM |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-200 FED SPEC ALL MATERIAL RESPONSES OR QQ-A-250 FED SPEC ALL MATERIAL RESPONSES OR QQ-A-430 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | ALUMINUM ALLOY OVERALL |
| NOMINAL THREAD DIAMETER | 0.438 INCHES |
| SPECIFICATION/STANDARD DATA | 88044-AN7 GOVERNMENT STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-5541 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ANODIZE OR CHROMATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.656 INCHES MINIMUM AND 0.672 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNF |
| WIDTH BETWEEN FLATS | 0.615 INCHES MINIMUM AND 0.627 INCHES MAXIMUM |