| DIAMETER OF RECESSED PORTION OF SHANK | 0.180 INCHES MINIMUM AND 0.190 INCHES MAXIMUM |
| LENGTH OF RECESSED PORTION OF SHANK | 0.140 INCHES MINIMUM AND 0.160 INCHES MAXIMUM |
| OVERALL LENGTH | 1.280 INCHES MINIMUM AND 1.300 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5637 ASSN STD SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL |
| NOMINAL THREAD SIZE | 0.250 INCHES STUD THREAD |
| SPECIAL FEATURES | LOCK THDS IN STUD END |
| STYLE DESIGNATOR | RECESSED |
| THREAD CLASS | 3A NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.720 INCHES MINIMUM NUT THREAD |
| THREAD LENGTH | 0.420 INCHES MINIMUM AND 0.470 INCHES MAXIMUM STUD THREAD |
| THREAD QUANTITY PER INCH | 20 STUD THREAD |
| THREAD PITCH DIAMETERS | +0.2045 TO 0.2063 INCHES STUD THREAD |
| THREAD SERIES DESIGNATOR | UNS STUD THREAD |