| MATERIAL | IRON ALLOY 660 |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE AND |
| AMS 5734 ASSN STD SINGLE MATERIAL RESPONSE |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| STYLE DESIGNATOR | LOCKED IN |
| DISTANCE FROM SERRATED PORTION TO NUT END | 0.985 INCHES MINIMUM AND |
| 1.015 INCHES MAXIMUM |
| DISTANCE FROM SERRATED PORTION TO STUD END | 0.653 INCHES MINIMUM AND |
| 0.693 INCHES MAXIMUM |
| DISTANCE FROM SERRATED PORTION TO END OF STUD THREAD | 0.127 INCHES MINIMUM AND |
| 0.157 INCHES MAXIMUM |
| OVERALL LENGTH | 1.673 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNJF NUT THREAD |
| UNC STUD THREAD |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| 0.375 INCHES STUD THREAD |
| THREAD CLASS | 3A NUT THREAD |
| 2A STUD THREAD |
| THREAD QUANTITY PER INCH | 28 NUT THREAD |
| 16 STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.579 INCHES MINIMUM AND |
| 0.609 INCHES MAXIMUM NUT THREAD |
| 0.531 INCHES NOMINAL STUD THREAD |
| LOCKING FEATURE | RING, LOCK SERRATED |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-S-45909 |
| MANUFACTURERS CODE | 96906 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS51992C803-16 |