| EFFECTIVE LENGTH | 0.645 INCHES MINIMUM AND 0.655 INCHES MAXIMUM |
| DIAMETER | 0.218 INCHES MINIMUM AND 0.220 INCHES MAXIMUM |
| FIRST END LOCATION | BOTH ENDS |
| FIRST END STYLE | SQUARE |
| HARDNESS RATING | 70.5 ROCKWELL A MINIMUM AND 72.0 ROCKWELL A MAXIMUM OVERALL |
| OVERALL LENGTH | 1.160 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 4TH MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4130 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL |
| SECOND END RELATIONSHIP WITH FIRST END | IDENTICAL |
| SECOND UNDERCUT WIDTH | 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM |
| STYLE DESIGNATOR | GROOVE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-26074,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | NICKEL OVERALL |
| UNDERCUT DIAMETER | 0.138 INCHES MINIMUM AND 0.139 INCHES MAXIMUM |
| UNDERCUT WIDTH | 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM |