| MATERIAL | STEEL COMP 8740 |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| STYLE DESIGNATOR | RECESSED |
| LENGTH OF RECESSED PORTION OF SHANK | 0.125 INCHES MINIMUM AND |
| 0.169 INCHES MAXIMUM |
| DIAMETER OF RECESSED PORTION OF SHANK | 0.221 INCHES MINIMUM AND |
| 0.231 INCHES MAXIMUM |
| OVERALL LENGTH | 1.370 INCHES MINIMUM AND |
| 1.390 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| UNC STUD THREAD |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| 0.250 INCHES STUD THREAD |
| THREAD CLASS | 3A NUT THREAD |
| THREAD QUANTITY PER INCH | 28 NUT THREAD |
| 20 STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.761 INCHES MINIMUM NUT THREAD |
| 0.460 INCHES MINIMUM AND |
| 0.480 INCHES MAXIMUM STUD THREAD |
| SPECIAL FEATURES | LOCK THDS ON STUD END |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND |
| 32.0 ROCKWELL C MAXIMUM |
| SURFACE FINISH | 125.0 MICROINCHES BODY |
| 63.0 MICROINCHES NUT THD |
| 125.0 MICROINCHES SHANK |
| 63.0 MICROINCHES STUD THD |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 99207 |
| DESIGN CONTROL REFERENCE | 646C115P2 |