| THREAD SERIES | UNF |
| NOMINAL THREAD SIZE | 0.312 INCHES |
| THREAD QUANTITY PER INCH | 24 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | PLASTIC POLYAMIDE LOCKING INSERT |
| STEEL COMP 630 OVERALL EXCEPT INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643,17-4PH ASSN STD SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT |
| SURFACE TREATMENT | CADMIUM OVERALL EXCEPT INSERT |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE II,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND |
| 42.0 ROCKWELL C MAXIMUM |
| NUT STYLE | NON-FLOATING SELF-LOCKING BARREL |
| NUT DIAMETER | 0.550 INCHES MINIMUM AND |
| 0.553 INCHES MAXIMUM |
| NUT LENGTH | 0.800 INCHES MINIMUM AND |
| 0.825 INCHES MAXIMUM |
| BARREL HEIGHT | 0.325 INCHES MINIMUM AND |
| 0.355 INCHES MAXIMUM |
| NUT HEIGHT | 0.395 INCHES MINIMUM AND |
| 0.420 INCHES MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 84955 |
| MFR SOURCE CONTROLLING REFERENCE | K611786-1 |