| FIRST END STYLE | SQUARE |
| FIRST STEP LENGTH | 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM |
| FIRST STEP DIAMETER | 0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM |
| HEAD STYLE | FILLISTER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 630 OVERALL |
| PIN HEAD DIAMETER | 0.375 INCHES NOMINAL |
| SECOND STEP DIAMETER | 0.1238 INCHES MINIMUM AND 0.1243 INCHES MAXIMUM |
| SECOND STEP LENGTH | 0.725 INCHES MINIMUM AND 0.735 INCHES MAXIMUM |
| UNDER HEAD LENGTH | 0.755 INCHES MINIMUM AND 0.785 INCHES MAXIMUM |
| STYLE DESIGNATOR | SHOULDER |
| SURFACE FINISH | 32.0 MICROINCHES LONG SHANK |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | EMS52484,0.0002-0.0005 THK; FSCM 99193 MFR REF SINGLE TREATMENT RESPONSE SHANK |
| SURFACE TREATMENT | CHROMIUM SHANK |