| BARREL HEIGHT | 0.340 INCHES NOMINAL |
| COUNTERBORE DIAMETER | 0.375 INCHES NOMINAL NUT |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD 3RD MATERIAL RESPONSE OR SAE ASSN STD 4TH MATERIAL RESPONSE OR SAE ASSN STD 5TH MATERIAL RESPONSE NUT |
| MATERIAL | PLASTIC POLYHEXAMETHYLENE AMIDE OR PLASTIC POLYCAPROLACTAM LOCKING INSERT |
| MATERIAL | STEEL COMP 4130 OR STEEL COMP 4340 OR STEEL COMP 8630 NUT |
| NOMINAL THREAD SIZE | 0.312 INCHES |
| NUT DIAMETER | 0.550 INCHES MINIMUM AND 0.553 INCHES MAXIMUM |
| NUT COUNTERBORE DEPTH | 0.071 INCHES NOMINAL NUT |
| NUT HEIGHT | 0.391 INCHES MINIMUM AND 0.421 INCHES MAXIMUM |
| NUT LENGTH | 0.813 INCHES NOMINAL |
| NUT STYLE | NON-FLOATING SELF-LOCKING BARREL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| SURFACE TREATMENT | CADMIUM OVERALL EXCEPT INSERT |
| TEMP RATING | 350.0 FAHRENHEIT NOMINAL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD QUANTITY PER INCH | 24 |