| DIAMETER OF RECESSED PORTION OF SHANK | 0.286 INCHES MINIMUM AND 0.291 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6382 ASSN STD 2ND MATERIAL RESPONSE OR AMS 6415 ASSN STD 3RD MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 8740 OR STEEL COMP 4140 OR STEEL COMP 4340 |
| III HARDNESS RATING | 45.0 ROCKWELL C MAXIMUM |
| III SURFACE FINISH | 32.0 MICROINCHES NUT THD32.0 MICROINCHES STUD THD32.0 MICROINCHES UNDERCUTS |
| PLAIN SHANK DIAMETER | 0.438 INCHES NOMINAL |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 0.375 INCHES NUT THREAD0.375 INCHES STUD THREAD |
| OVERALL LENGTH | 3.255 INCHES MINIMUM AND 3.265 INCHES MAXIMUM |
| SPECIAL FEATURES | 0.438-20 UNF-3A THREADED SECTION OF STUD LOCATED 1.150 INCHES FROM NUT END |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3A NUT THREAD3A STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREADRIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.812 INCHES NOMINAL NUT THREAD0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM STUD THREAD |
| THREAD PITCH DIAMETERS | +0.3392 TO 0.3407 INCHES STUD THREAD |
| THREAD QUANTITY PER INCH | 24 NUT THREAD16 STUD THREAD |
| THREAD SERIES DESIGNATOR | UNF NUT THREADUNS STUD THREAD |