| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | STEEL COMP 1137 OVERALL EXCEPT INSERT |
| NUT STYLE | HEXAGON |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| BEARING SURFACE TYPE | ANY ACCEPTABLE |
| THREAD SERIES | UNC |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3B |
| MATERIAL DOCUMENT AND CLASSIFICATION | FED STD-66 FED STD SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT |
| SURFACE TREATMENT | CADMIUM OVERALL EXCEPT INSERT |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND |
| 34.0 ROCKWELL C MAXIMUM |
| NUT HEIGHT | 0.240 INCHES MINIMUM AND |
| 0.360 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.430 INCHES MINIMUM AND |
| 0.439 INCHES MAXIMUM |
| TEMP RATING | 250.0 DEG FAHRENHEIT NOMINAL |
| SPECIAL FEATURES | FOR ADDITIONAL DESCRIPTION AND INFORMATION CONCERNING THIS ITEM,REFER TO SPCCINST 4440.376 SERIES,CHAPTER 9 |
| CRITICALITY CODE JUSTIFICATION | ZZZY |
| REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 96169 |
| DESIGN CONTROL REFERENCE | 688-1864 APPX 2 |