| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.410 INCHES MINIMUM AND |
| 0.420 INCHES MAXIMUM |
| FASTENER LENGTH | 1.150 INCHES NOMINAL |
| MATERIAL | IRON ALLOY 660 FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-W-423 COND B FED SPEC SINGLE MATERIAL RESPONSE SPRING |
| QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF |
| AMS 5734 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| HEAD STYLE | HEXAGON |
| HEAD HEIGHT | 0.181 INCHES MINIMUM AND |
| 0.187 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND |
| 0.375 INCHES MAXIMUM |
| MATERIAL ACCOMMODATED THICKNESS | 0.094 INCHES MINIMUM AND |
| 0.125 INCHES MAXIMUM |
| SPECIAL FEATURES | W/INTERNAL SOCKET DRIVE IN HEAD |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 97942 |
| MFR SOURCE CONTROLLING REFERENCE | 583R879H03 |