| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| THREAD DIRECTION | RIGHT-HAND |
| NUT STYLE | PLATE (FLOATING) |
| MATERIAL | IRON ALLOY 660 BASE |
| NICKEL ALLOY 718 NUT |
| THREAD SERIES | UNJF |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3B |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS-5525 ASSN STD SINGLE MATERIAL RESPONSE BASE |
| AMS-5596 ASSN STD 1ST MATERIAL RESPONSE OR |
| AMS-5597 ASSN STD 2ND MATERIAL RESPONSE OR |
| AMS-5662 ASSN STD 3RD MATERIAL RESPONSE OR |
| AMS-5663 ASSN STD 4TH MATERIAL RESPONSE OR |
| AMS-5664 ASSN STD 5TH MATERIAL RESPONSE NUT |
| SURFACE TREATMENT | PASSIVATE BASE |
| PASSIVATE NUT |
| NUT LENGTH | 1.032 INCHES MINIMUM AND |
| 1.052 INCHES MAXIMUM |
| NUT HEIGHT | 0.570 INCHES MINIMUM AND |
| 0.590 INCHES MAXIMUM |
| PLATE THICKNESS | 0.050 INCHES MINIMUM AND |
| 0.070 INCHES MAXIMUM |
| PLATE WIDTH | 0.640 INCHES MINIMUM AND |
| 0.660 INCHES MAXIMUM |
| NUT COUNTERBORE DEPTH | 0.117 INCHES MINIMUM AND |
| 0.137 INCHES MAXIMUM NUT |
| COUNTERBORE DIAMETER | 0.302 INCHES MINIMUM AND |
| 0.322 INCHES MAXIMUM BASE |
| SPECIAL FEATURES | BASEPLATE FINNISH CODE P AT THE END OF PART NUMBER = PRIMER ON BOTTOM SURFACE OF BASEPLATE, EPOXY PRIMER PER MIL-P-85582 |