| THREAD SERIES | UNJF |
| NOMINAL THREAD SIZE | 0.500 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | STEEL COMP 601 OR |
| STEEL COMP H11 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6304 ASSN STD 1ST MATERIAL RESPONSE OR |
| AMS 6485 ASSN STD 2ND MATERIAL RESPONSE OR |
| AMS 6487 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 48.0 ROCKWELL C MAXIMUM |
| NUT STYLE | SPLINE DRIVE |
| WASHER OUTSIDE DIAMETER | 0.863 INCHES MAXIMUM |
| OVERALL HEIGHT | 0.549 INCHES MAXIMUM |
| WASHER THICKNESS | 0.060 INCHES MINIMUM |
| DRIVE POINT QUANTITY | 12 |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| COUNTERSINK ANGLE | 85.0 DEGREES MINIMUM WASHER |
| LUBRICATION | SOLUBLE LUBRICANT |
| TEMP RATING | 450.0 DEG FAHRENHEIT MAXIMUM |
| SPECIAL FEATURES | AREA ABOVE WRENCHING ELEMENT PAINTED WHITE PER TT-E-489,NO. 17875 |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 96906 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS14156-08 |