| SPECIFICATION/STANDARD DATA | 81205-BACB30US MANUFACTURERS STANDARD |
| WIDTH BETWEEN FLATS | 0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | BMS10-85, TYPE 1, CLASS A MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ALUMINUM OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.500 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNJF |
| COLOR | BLACK THREADS |
| EXTENDED WASHER THICKNESS | 0.032 INCHES MINIMUM AND 0.052 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 0.347 INCHES MINIMUM AND 0.361 INCHES MAXIMUM |
| FASTENER LENGTH | 1.625 INCHES NOMINAL |
| GRIP DIAMETER | 0.2637 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM |
| GRIP LENGTH | 1.125 INCHES NOMINAL |
| HEAD HEIGHT | 0.225 INCHES MINIMUM AND 0.245 INCHES MAXIMUM |
| HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5962 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | NICKEL ALLOY 718 OVERALL |
| PROPRIETARY CHARACTERISTICS | PACS |
| MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SINGLE SHEAR STRENGTH | 125000 POUNDS PER SQUARE INCH |