| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A493 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A581 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5640 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE NUT |
| MATERIAL | STEEL COMP 303 OR STEEL COMP 304 NUT |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| NUT HEIGHT | 0.240 INCHES MINIMUM AND 0.360 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.428 INCHES MINIMUM AND 0.439 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM A967 ASSN STD SINGLE TREATMENT RESPONSE NUT |
| SURFACE TREATMENT | PASSIVATE NUT |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD QUANTITY PER INCH | 28 |