| CRITICALITY CODE JUSTIFICATION | FEAT |
| FASTENER LENGTH | 0.188 INCHES NOMINAL |
| HEAD STYLE | HEADLESS (SETSCREW) |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | COPPER ALLOY 268 OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| POINT STYLE | CUP |
| SPECIAL FEATURES | 0.00002 IN. MIN 0.00005 IN. MAX PLATING THICKNESS AND DO NOT APPLY INTERMEDIATE COATING BEFORE PLATING SEE PAR 3.3.5 SPEC QQ-C-320 AND 125 MICROINCH FINISH OVERALL AND SPECIFIED TOLERANCE APPLIES TO MAX METLA CONDITIONS AND ADDITIONAL TOLERANCE ON TIR PERMITTED EQUAL TO SUM OF TOLERANCES ACTUALLY USED IN MACHING OF BOTH RELATED DIAMETERS |
| WIDTH ACROSS FLATS | 0.126 INCHES MINIMUM AND 0.128 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-C-320,TYPE 2,CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CHROMIUM OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNF |