| EXTENDED WASHER THICKNESS | 0.158 INCHES MINIMUM AND 0.178 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM |
| FASTENER LENGTH | 2.570 INCHES MINIMUM AND 2.610 INCHES MAXIMUM |
| HARDNESS RATING | 29.0 ROCKWELL C MINIMUM THREADS |
| HARDNESS RATING | 80.0 ROCKWELL C MINIMUM GRIP |
| HEAD HEIGHT | 0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM |
| HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| MATERIAL DOCUMENT AND CLASSIFICATION | B50T12A FSCM 07482 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| NONSTANDARD THREAD PITCH DIAMETER | +0.2213 TO 0.2238 INCHES |
| SHOULDER DIAMETER | 0.371 INCHES MINIMUM AND 0.373 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 2.010 INCHES MINIMUM AND 2.030 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNF |
| WIDTH BETWEEN FLATS | 0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.458 INCHES MINIMUM AND 0.491 INCHES MAXIMUM |