| DISTANCE FROM CENTERLINE TO FLAT | 0.240 INCHES MINIMUM AND 0.244 INCHES MAXIMUM |
| FASTENER LENGTH | 1.410 INCHES MINIMUM AND 1.430 INCHES MAXIMUM |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD DIAMETER | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM |
| HEAD HEIGHT | 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM |
| HEAD STYLE | BALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5628 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 431 OVERALL |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| SHOULDER DIAMETER | 0.400 INCHES MINIMUM AND 0.401 INCHES MAXIMUM ALL SHOULDERS |
| SHOULDER SHAPE | ROUND ALL SHOULDERS |
| SHOULDER LENGTH | 0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM SECOND SHOULDER |
| SHOULDER LENGTH | 0.405 INCHES MINIMUM AND 0.415 INCHES MAXIMUM FIRST SHOULDER |
| SPECIAL FEATURES | SHOULDER RELIEF 0.060 IN. WIDE,0.410 IN. FROM BEARING SIRFACE OF HEAD |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.580 INCHES MINIMUM AND 0.610 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNF |