| MATERIAL | IRON ALLOY 660 |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5734 ASSN STD SINGLE MATERIAL RESPONSE |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYLE DESIGNATOR | LOCKED IN |
| DISTANCE FROM SERRATED PORTION TO NUT END | 0.423 INCHES MINIMUM AND |
| 0.453 INCHES MAXIMUM |
| DISTANCE FROM SERRATED PORTION TO STUD END | 0.365 INCHES MINIMUM AND |
| 0.395 INCHES MAXIMUM |
| DISTANCE FROM SERRATED PORTION TO END OF STUD THREAD | 0.135 INCHES MINIMUM AND |
| 0.165 INCHES MAXIMUM |
| OVERALL LENGTH | 0.818 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNC NUT THREAD |
| UNS STUD THREAD |
| NOMINAL THREAD SIZE | 0.164 INCHES NUT THREAD |
| 0.190 INCHES STUD THREAD |
| THREAD CLASS | 3A NUT THREAD |
| THREAD QUANTITY PER INCH | 32 NUT THREAD |
| 24 STUD THREAD |
| THREAD PITCH DIAMETERS | 0.1639 TO 0.1654 INCHES STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.395 INCHES MINIMUM AND |
| 0.425 INCHES MAXIMUM NUT THREAD |
| 0.215 INCHES MINIMUM AND |
| 0.245 INCHES MAXIMUM STUD THREAD |
| LOCKING FEATURE | RING, LOCK SERRATED |
| HARDNESS RATING | 269.0 BRINELL STANDARD NOMINAL |
| SERRATION QUANTITY | 16 |
| SERRATION INCLUDED ANGLE | 89.0 DEGREES MINIMUM AND |
| 92.0 DEGREES MAXIMUM |