| MATERIAL | STEEL COMP 8630 OR |
| STEEL COMP 8740 OR |
| STEEL COMP 4130 |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6280 ASSN STD 1ST MATERIAL RESPONSE OR |
| AMS 6322 ASSN STD 2ND MATERIAL RESPONSE OR |
| AMS 6324 ASSN STD 2ND MATERIAL RESPONSE OR |
| AMS 6370 ASSN STD 3RD MATERIAL RESPONSE |
| SURFACE TREATMENT | CADMIUM OVERALL |
| STYLE DESIGNATOR | STEPPED |
| SHANK DIAMETER | 0.312 INCHES MINIMUM |
| OVERALL LENGTH | 1.418 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| UNS STUD THREAD |
| NOMINAL THREAD SIZE | 0.312 INCHES NUT THREAD |
| 0.375 INCHES STUD THREAD |
| THREAD CLASS | 3A NUT THREAD |
| THREAD QUANTITY PER INCH | 24 NUT THREAD |
| 16 STUD THREAD |
| THREAD PITCH DIAMETERS | 0.3405 TO 0.3421 INCHES STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.438 INCHES NOMINAL NUT THREAD |
| 0.370 INCHES MINIMUM STUD THREAD |
| SPECIAL FEATURES | STUD END MUST BE ROLLED THREAD |
| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND |
| 32.0 ROCKWELL C MAXIMUM |