| MATERIAL | STEEL COMP 8740 |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE |
| SURFACE TREATMENT | CADMIUM OVERALL |
| LENGTH OF RECESSED PORTION OF SHANK | 2.625 INCHES NOMINAL |
| DIAMETER OF RECESSED PORTION OF SHANK | 0.229 INCHES MINIMUM AND |
| 0.233 INCHES MAXIMUM |
| DISTANCE ACROSS FLATS | 0.250 INCHES NOMINAL |
| OVERALL LENGTH | 4.438 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| UNS STUD THREAD |
| NOMINAL THREAD SIZE | 0.312 INCHES NUT THREAD |
| 0.375 INCHES STUD THREAD |
| THREAD CLASS | 3A NUT THREAD |
| THREAD QUANTITY PER INCH | 24 NUT THREAD |
| 16 STUD THREAD |
| THREAD PITCH DIAMETERS | 0.3452 TO 0.3467 INCHES STUD THREAD |
| THREAD LENGTH | 0.625 INCHES MINIMUM NUT THREAD |
| 0.562 INCHES MINIMUM STUD THREAD |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND |
| 32.0 ROCKWELL C MAXIMUM |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 88044 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | AN164142 |