| FIRST END STYLE | SQUARE |
| FIRST END LOCATION | BOTH ENDS |
| INTERNAL DRIVE STYLE | SOCKET |
| OVERALL LENGTH | 2.320 INCHES MINIMUM AND 2.680 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 309 OR STEEL COMP 310 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 322 OR STEEL COMP 324 OR STEEL COMP 347 OVERALL |
| NOMINAL THREAD SIZE | 0.312 INCHES |
| SECOND END RELATIONSHIP WITH FIRST END | IDENTICAL |
| SECOND SHANK DIAMETER | 0.550 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| SECOND SHANK LENGTH | 0.730 INCHES MINIMUM AND 0.790 INCHES MAXIMUM |
| SHANK DIAMETER | 0.312 INCHES NOMINAL |
| SHANK LENGTH | 0.469 INCHES MINIMUM AND 0.499 INCHES MAXIMUM |
| SHOULDER WIDTH ACROSS FLATS | 0.625 INCHES NOMINAL |
| STYLE DESIGNATOR | UNDERCUT |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.469 INCHES MINIMUM AND 0.499 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| UNDERCUT WIDTH | 0.816 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.312 INCHES NOMINAL |