| THREAD LENGTH | 0.250 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | BA |
| THREAD PITCH IN MILLIMETERS | 0.43 |
| EXTERNAL THREAD TOLERANCE CLASS | NORMAL |
| FASTENER LENGTH | 0.250 INCHES NOMINAL |
| HEAD DIAMETER | 0.147 INCHES MINIMUM AND 0.157 INCHES MAXIMUM |
| HEAD HEIGHT | 0.059 INCHES MINIMUM AND 0.063 INCHES MAXIMUM |
| HEAD STYLE | FLAT FILLISTER |
| INTERNAL DRIVE STYLE | SLOT |
| MINIMUM TENSILE STRENGTH | 62720 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 2.20 MILLIMETERS |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | K7766-BS970 EN1A NATIONAL STD/SPEC 1ST MATERIAL RESPONSE OR K7766-BS970PART 1 GRADE 220-07 NATIONAL STD/SPEC 2ND MATERIAL RESPONSE |
| SCREW MATERIAL | STEEL |
| SCREW SURFACE TREATMENT | CADMIUM |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | K0379-DTD904 GOVERNMENT STD/SPEC SINGLE TREATMENT RESPONSE |
| SPECIAL FEATURES | MODIFIED BY MATERIAL AND SURFACE TREATMENT |
| THREAD DIRECTION | RIGHT-HAND |