| BEARING SURFACE TYPE | FLAT |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | NF A 35-572 NATIONAL SPEC 2ND MATERIAL RESPONSE OVERALL EXCEPT INSERT |
| MATERIAL | PLASTIC POLYAMIDE LOCKING INSERT |
| MATERIAL | STEEL COMP Z10CNT18-10 OVERALL EXCEPT INSERT OR STEEL COMP Z10CNT18-11 OVERALL EXCEPT INSERT |
| NOMINAL THREAD SIZE | 4.0 MILLIMETERS |
| NUT HEIGHT | 5.3 MILLIMETERS NOMINAL |
| NUT STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 7.0 MILLIMETERS NOMINAL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MA-E27 CODE PA MIL SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| SURFACE TREATMENT | PASSIVATE OVERALL EXCEPT INSERT |
| TEMP RATING | 120.0 DEG CELSIUS MAXIMUM |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD PITCH IN MILLIMETERS | 0.7 |
| THREAD TOLERANCE CLASS | 4H5H INTERNAL |
| THREAD SERIES | ISO M |