| MATERIAL | STEEL COMP 8740 OR |
| STEEL COMP 8640 OR |
| STEEL COMP 4140 OR |
| STEEL COMP 8742 OR |
| STEEL COMP 8642 |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A322 ASSN STD 1ST MATERIAL RESPONSE OR |
| ASTM A331 ASSN STD 1ST MATERIAL RESPONSE OR |
| ASTM A322 ASSN STD 2ND MATERIAL RESPONSE OR |
| ASTM A331 ASSN STD 2ND MATERIAL RESPONSE OR |
| ASTM A322 ASSN STD 3RD MATERIAL RESPONSE OR |
| ASTM A331 ASSN STD 3RD MATERIAL RESPONSE OR |
| SAE ASSN STD 4TH MATERIAL RESPONSE OR |
| SAE ASSN STD 5TH MATERIAL RESPONSE |
| OVERALL LENGTH | 3.657 INCHES MINIMUM AND |
| 3.719 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| UNS STUD THREAD |
| NOMINAL THREAD SIZE | 0.500 INCHES NUT THREAD |
| 0.500 INCHES STUD THREAD |
| THREAD CLASS | 2A NUT THREAD |
| THREAD QUANTITY PER INCH | 20 NUT THREAD |
| 13 STUD THREAD |
| THREAD PITCH DIAMETERS | 0.4561 TO 0.4577 INCHES STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.875 INCHES MINIMUM NUT THREAD |
| 0.938 INCHES MINIMUM STUD THREAD |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND |
| 32.0 ROCKWELL C MAXIMUM |