| FIRST END STYLE | CHAMFERED |
| FIRST END TAPER ANGLE | 45.0 DEGREES NOMINAL |
| FIRST END TAPER LENGTH | 0.030 INCHES NOMINAL |
| FIRST STEP LENGTH | 1.142 INCHES MINIMUM AND 1.162 INCHES MAXIMUM |
| FIRST STEP DIAMETER | 0.707 INCHES MINIMUM AND 0.709 INCHES MAXIMUM |
| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD STYLE | THUMB NO. 4 |
| HEAD WIDTH | 1.000 INCHES NOMINAL |
| HEIGHT | 0.560 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A331 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 1330 OR STEEL COMP 4130 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8640 OVERALL |
| SECOND STEP DIAMETER | 0.625 INCHES NOMINAL |
| SECOND STEP LENGTH | 1.201 INCHES NOMINAL |
| SPECIAL FEATURES | FOURTH STEP OVERALL LG. IS 1.025 NOMINAL AND IS THREADED 0.375-24UNF-2ASECOND STEP IS THREADED 0.625-18UNF-2 A |
| STYLE DESIGNATOR | SHOULDER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CL1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |
| THIRD STEP DIAMETER | 0.540 INCHES MINIMUM AND 0.542 INCHES MAXIMUM |
| THIRD STEP LENGTH | 1.862 INCHES MINIMUM AND 1.877 INCHES MAXIMUM |
| UNDER HEAD LENGTH | 5.235 INCHES MINIMUM AND 5.265 INCHES MAXIMUM |