| BEARING SURFACE TYPE | CHAMFERED |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A563 GRADE A ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SQUARE NUTS,ZINC PLATED |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD SIZE | 0.375 INCHES |
| NUT HEIGHT | 0.310 INCHES MINIMUM AND 0.346 INCHES MAXIMUM |
| NUT STYLE | SQUARE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 16 |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH ACROSS FLATS | 0.606 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |