| MATERIAL | IRON ALLOY 660 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| FIRST END STYLE | CHAMFERED |
| FIRST END TIP RADIUS | 0.070 INCHES NOMINAL |
| FIRST END TAPER LENGTH | 0.363 INCHES NOMINAL |
| SECOND END RELATIONSHIP WITH FIRST END | NOT IDENTICAL |
| SECOND END STYLE | CHAMFERED |
| SECOND END TAPER ANGLE | 45.0 DEGREES NOMINAL |
| FIRST END LOCATION | CHAMFERED END |
| THREAD SERIES DESIGNATOR | UNJF |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.370 INCHES NOMINAL |
| SPECIAL FEATURES | HEAT TREAT TO 140 KSI MIN PER MIL-H-6875 |
| SUPPLEMENTARY FEATURES | SHANK LENGTH 0.387 IN.; SHOULDER WIDTH ACROSS FLATS 0.625 IN.; SHANK DIAMETER 0.370 IN. MIN. AND 0.375 IN. MAX.; OVERALL LENGTH 1.433 IN. ; SECOND SHANK DIAMTER 0.247 IN. MIN. AND 0.249 IN. MAX.; SECOND SHANK LENGTH 0.188 IN.; OVERALL SURFACE FINISH 125.0 MICROINCHES |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | INDEX PIN, 1/4-28UNJF-3A |