| THREAD SERIES | UNJF |
| NOMINAL THREAD SIZE | 0.500 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | STEEL COMP 8630 OR |
| STEEL COMP 4037 OR |
| STEEL COMP 601 OR |
| STEEL COMP H11 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6280 ASSN STD 1ST MATERIAL RESPONSE OR |
| AMS 6300 ASSN STD 2ND MATERIAL RESPONSE OR |
| AMS 6304 ASSN STD 2ND MATERIAL RESPONSE OR |
| AMS 6487 ASSN STD 3RD MATERIAL RESPONSE OR |
| AMS 6485 ASSN STD 3RD MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND |
| 45.0 ROCKWELL C MAXIMUM |
| NUT STYLE | DOUBLE HEXAGON |
| NUT HEIGHT | 0.394 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.741 INCHES MINIMUM AND |
| 0.752 INCHES MAXIMUM |
| BEARING SURFACE TYPE | CHAMFERED |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | SOLUBLE LUBRICANT |
| TEMP RATING | 900.0 DEG FAHRENHEIT MAXIMUM |