| MATERIAL | STEEL COMP 4340 OR |
| STEEL COMP 8740 |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE-AMS6414 NATIONAL STD 1ST MATERIAL RESPONSE OR |
| SAE-AMS6322 NATIONAL STD 2ND MATERIAL RESPONSE OR |
| SAE-AMS6325 NATIONAL STD 2ND MATERIAL RESPONSE OR |
| SAE-AMS6327 NATIONAL STD 2ND MATERIAL RESPONSE |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | SAE-AMS-QQ-P-416, TYPE II, CLASS 2 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYLE DESIGNATOR | RECESSED |
| LENGTH OF RECESSED PORTION OF SHANK | 0.375 INCHES NOMINAL |
| DIAMETER OF RECESSED PORTION OF SHANK | 0.399 INCHES MINIMUM AND |
| 0.409 INCHES MAXIMUM |
| OVERALL LENGTH | 1.938 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNJS NUT THREAD A |
| UNJF NUT THREAD B |
| NOMINAL THREAD SIZE | 0.438 INCHES NUT THREAD A |
| 0.438 INCHES NUT THREAD B |
| THREAD CLASS | 3A NUT THREAD B |
| THREAD QUANTITY PER INCH | 14 NUT THREAD A |
| 20 NUT THREAD B |
| THREAD LENGTH | 0.938 INCHES NOMINAL NUT THREAD A |
| 0.625 INCHES NOMINAL NUT THREAD B |